The correct answer to the question is option 4: Kasturi.
In the context of Basmati rice, a semi-dwarf high-yielding variety refers to a type of rice that has shorter plant height but produces a significant quantity of grains or yield. India, being a major producer and exporter of Basmati rice, has developed different varieties to suit specific requirements and preferences.
Option 1: Sindhu is not the answer because Sindhu is a variety of non-Basmati rice and not a semi-dwarf high-yielding variety.
Option 2: Rathna is also not the correct answer because Rathna is a short-duration variety of non-Basmati rice and not a semi-dwarf high-yielding Basmati variety.
Option 3: Mallika is again not the correct answer because Mallika is a variety of mango and not a variety of Basmati rice.
Therefore, the correct answer is option 4: Kasturi. Kasturi is a semi-dwarf high-yielding variety of Basmati rice that has been developed by India and is known for its excellent aroma and flavor.