Direction: In the following questions, out of the four alternatives, choose the one which can be substituted for the given words/ sentence.
alumnus (N.) : a former male student of a SCHOOL, college/ UNIVERSITY
genius (Adj.) : unusually great intelligence, skill/artistic ability
SCHOLAR (N.): a person who knows a LOT about a particular subject
learner (N.) : a peson who is finding about a subject or how to do someting