Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').

[EX Q]: Streptomyces are of special interest for ____ reasons.\Question: Choose the right answer from options given a) nine b) seven c) four d) two
[EX A]: d

[EX Q]: Prairie dogs bear four or ____ young per litter.\Question: Choose the right answer from options given a) five b) eight c) two d) zero
[EX A]: a

[EX Q]: Humans seem to be able to sense at least ____ forms of energy.\Question: Choose the right answer from options given a) three b) seven c) eight d) no
[EX A]:
c

