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: Most school aged children pass at least ____ stools per week, with an average of one stool per day.\Question: Choose the right answer from options given a) three b) one c) six d) zero

SOLUTION: a

PROBLEM: Statistics show, however, that men are ____ times more likely to be lefty than women.\Question: Choose the right answer from options given a) four b) three c) nine d) two

SOLUTION: b

PROBLEM: Most guitars only have ____ strings.\Question: Choose the right answer from options given a) no b) six c) eight d) three

SOLUTION:
b