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]: All loci have ____ or two alleles.\Question: Choose the right answer from options given a) no b) six c) four d) one
[EX A]: d

[EX Q]: Big bluestem grows up to ____ feet tall.\Question: Choose the right answer from options given a) seven b) no c) nine d) eight
[EX A]: c

[EX Q]: Most school counselors work nine or ____ months a year with time off during school vacations.\Question: Choose the right answer from options given a) two b) zero c) ten d) seven
[EX A]:
c