Botanical name of bajra is

    Bajra, commonly known as Pearl millet, is a millet that has been farmed in India and Africa since prehistoric times. The pearl millet is a member of the Pennisetum genus and Poaceae family.

        This millet species thrives in arid, low-fertility environments. It may also grow in soils with low pH or high saline levels. Pearl millets can thus be cultivated in locations where other crops, such as wheat, are unable to thrive. The botanical name of Bajra is Pennisetum glaucum.

Bajra, often known as pearl millet, is a Poaceae plant with the botanical name Pennisetum glaucum or Pennisetum typhoideum (grass family). Hence, the correct answer is option B Pennisetum glaucum