Which of the following is a leguminous crop?

The correct answer is Option (4) → Pulses

Pulses — gram, arhar, moong, urad, masur and peas — belong to the legume family. Their roots carry nodules of Rhizobium bacteria that fix atmospheric nitrogen, which is why they are grown in rotation with cereals to restore soil fertility.

Jowar and the other millets are cereals of the grass family, and sesamum (til) is an oilseed — none of them is leguminous.