Concept:Groundnut is a legume crop, and every crop has a unique scientific name used universally.
Explanation:The botanical name of groundnut is
Arachis hypogaea.
Groundnut is also commonly called peanut.
It belongs to the family
Fabaceae and is cultivated mainly for its seeds and oil.
Now check the other options given:
Vigna unguiculata is the botanical name of cowpea.
Phaseolus vulgaris is the botanical name of common bean or kidney bean.
Glycine max is the botanical name of soybean.
None of these refers to groundnut.
Therefore, the plant whose botanical name is
Arachis hypogaea is definitely groundnut.
This matches option B in the list.
Answer:Arachis hypogaea (Option B).