Which one of the following ocean currents is a cold current?

Ocean currents are classified as warm or cold based on their temperature relative to the surrounding waters. The South Atlantic Drift (also known as the South Atlantic Current) is a cold current that flows eastward across the South Atlantic Ocean [1][2]. It is formed by the merging of the warm Brazil Current with the cold West Wind Drift (Antarctic Circumpolar Current) at approximately 40° S latitude [2]. In contrast, the Mozambique Current is a warm current flowing between Madagascar and the African coast [1]. The East Australian Current is a warm western boundary current in the Pacific Ocean. The Caribbean Current is also a warm current that flows into the Gulf of Mexico. Therefore, among the given options, the South Atlantic Drift is the only cold current, as it originates from the sub-polar West Wind Drift [2].

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 32: Ocean Movements Ocean Currents And Tides > Southern Indian Ocean Currents > p. 495
2. [2] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 12: The Oceans > The Circulation of the Atlantic Ocean > p. 111