With reference to the Himalayan rivers joining the Ganga downstream of Prayagraj from West to East, which one of the following sequences is correct ?

Lists important left‑bank tributaries of the Ganga as Ramganga, Gomati, Ghaghara, Gandak, Kosi, Mahananda—identifying these rivers as left‑bank Himalayan tributaries downstream of the Yamuna (Prayag).

A student could place these named tributaries on a map east of Prayag to check their relative west–east sequence.

Gives a named list of large left‑hand tributaries (Sharda, Kali, Gomti, Ghagra, Gandak, Kosi, Mahananda), which appears ordered geographically along the Ganga system.

Treat the list as a west→east ordering cue and compare each river's mouth location on a map to test the proposed Ghaghara–Gomati–Gandak–Kosi sequence.

States Gandak enters the plains in Champaran (Bihar) and joins the Ganga at Sonpur opposite Patna, giving a concrete downstream (eastern) location for Gandak's confluence.

Use Patna/Sonpur as a fixed point on a map to judge whether Ghaghara and Gomati confluences lie west of Gandak and whether Kosi lies east.

Notes Ghaghara, Gandak and Kosi rise in Nepal Himalaya and are major Himalayan tributaries that flood northern plains—grouping Ghaghara with Gandak and Kosi as neighboring Nepal‑born tributaries.

Map the Nepal origins and follow each river's course into the Indian plains to infer their lateral ordering along the Ganga.

States Gandak and Kosi are main left‑hand tributaries in the Middle Ganga Plain, indicating both join the Ganga in roughly the same lower‑middle reach (useful for relative placement).

Compare the described Middle Ganga Plain confluence zone with known locations of Ghaghara and Gomati to test relative west–east positions.

Gives an ordered list of important left bank tributaries: Ramganga, Gomati, Ghaghara, Gandak, Kosi, Mahananda — a sequence that can hint at relative west–east positions.

A student could place these named tributaries on a map of the Ganga basin to infer their west–east ordering downstream of Prayagraj.

Lists major left‑hand tributaries as Sharda, Kali, Gomti, Ghagra, Gandak, Kosi, Mahananda — another sequence that suggests relative lateral ordering along the Ganga.

Compare this sequence with a physical map to check whether Ghagra, Gomti, Kosi, Gandak appear in the claimed west–east order downstream.

Specifies where the Gandak joins the Ganga (at Sonpur opposite Patna), giving a concrete downstream/eastward location for one named tributary.

Using this known confluence (Sonpur/Patna) on a map, a student can locate Gandak relative to Prayagraj and other tributaries to test the proposed order.

States that Ghaghara, Gandak and Kosi rise in the Nepal Himalaya and are major Himalayan tributaries of the Ganga—identifies the group under consideration.

Knowing these rivers originate in Nepal, a student can trace their courses on a regional map to determine their relative positions as they enter the Indian plains downstream of Prayagraj.

Notes that Gandak and Kosi are main left‑hand tributaries in the Middle Ganga Plain, indicating both join the Ganga in Bihar (downstream of Prayagraj).

Map the Middle Ganga Plain confluences (Gandak, Kosi) and compare distances/east–west alignment from Prayagraj to see if their order matches the claim.

This source lists important left‑bank tributaries as 'Ramganga, Gomati, Ghaghara, Gandak, Kosi and Mahananda', giving an ordered enumeration of left‑bank Himalayan tributaries.

A student could map these named tributaries on a India/Nepal map to see if the listed sequence corresponds to west→east positions downstream of Prayagraj.

This text similarly lists major left‑hand tributaries in a sequence: 'Sharda, Kali, Gomti, Ghagra, Gandak, Kosi, and Mahananda', again providing an ordered list of left tributaries.

Compare this sequence with geographic coordinates or a river map to judge relative longitudinal ordering downstream of Prayagraj.

Gives a concrete confluence location: the Gandak joins the Ganga at Sonpur opposite Patna, which is well east/downstream of Prayagraj.

Use the known location of Prayagraj and Patna on a map to place the Gandak relative to other tributaries and check east/west order.

States that Gandak and Kosi are the main left‑hand tributaries in the Middle Ganga Plain, implying they join the Ganga in the middle/lower reach downstream of Prayagraj.

Locate the Middle Ganga Plain region on a map to infer approximate downstream order of Kosi vs Gandak relative to Prayagraj.

Confirms that Ghaghara, Gandak and Kosi rise in the Nepal Himalaya and are major tributaries that join the Ganga, indicating they are part of the Himalayan left‑bank group considered in ordering.

Combine this with mapped positions of their mouths (from other snippets) to help determine their west–east sequence downstream of Prayagraj.