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: Some species can make dives over ____ hundred feet deep.\Question: Choose the right answer from options given a) six b) eight c) two d) one

SOLUTION: b

PROBLEM: Calves are completely nutritionally dependent on their mothers to ____ months old.\Question: Choose the right answer from options given a) three b) zero c) five d) no

SOLUTION: a

PROBLEM: Some infected people have ____ symptoms at all.\Question: Choose the right answer from options given a) four b) eight c) no d) five

SOLUTION:
c