Biofuels

Biofuels are fuels obtained from biological sources and are renewable substitutes for fossil fuels.
Jatropha curcas (family Euphorbiaceae) is a hardy shrub that grows on wastelands and in dry areas.
Its seeds contain about 30 to 40 percent of non-edible oil, which is converted into biodiesel by transesterification.
For this reason Jatropha is being cultivated and tried in India as a biofuel (biodiesel) substitute for fossil fuels.
Musa is banana, Aegilops is a wild grass related to wheat, and Azadirachta is neem, known for the biopesticide azadirachtin; none of these is the biodiesel crop.
So the answer is Jatropha.

Biodiesel is a renewable fuel obtained from vegetable oils by transesterification.
Pongamia pinnata (pongam or karanja) is a leguminous, nitrogen-fixing tree whose seeds contain 30-40 percent oil.
It is commonly planted as an ornamental and shade tree, and in the Indian countryside its seed oil is being used as a source of biodiesel.
Jatropha is another important biodiesel plant.
Sugarcane and beetroot are sources of sugar, which is fermented to give ethanol (bioethanol), not biodiesel.
Euphorbia species are petrocrops that yield latex rich in hydrocarbons, but they are not the source being utilised for biodiesel in the countryside.
So the answer is Pongamia.