TASK DEFINITION: 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').
PROBLEM: Many people have ____ symptoms until they suffer chest pains or a heart attack.\Question: Choose the right answer from options given a) three b) one c) no d) seven

SOLUTION: c

PROBLEM: Females inherit ____ X chromosomes, one from each parent.\Question: Choose the right answer from options given a) five b) two c) no d) seven

SOLUTION: b

PROBLEM: Mature plants produce ____ annual harvests in low fertility soil.\Question: Choose the right answer from options given a) three b) seven c) two d) no

SOLUTION:
c