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: Babies show an interest in solid foods when they are approximately four to ____ weeks old.\Question: Choose the right answer from options given a) nine b) eight c) five d) six

SOLUTION: c

PROBLEM: Some experts believe whining peaks around the ages of ____ or four.\Question: Choose the right answer from options given a) three b) no c) four d) seven

SOLUTION: a

PROBLEM: Most people recover in ____ to three months.\Question: Choose the right answer from options given a) five b) one c) zero d) seven

SOLUTION:
b