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: Intensity is defined as the average of the extreme anomalies during ____ consecutive months.\Question: Choose the right answer from options given a) ten b) three c) two d) five

SOLUTION: b

PROBLEM: National immunization vaccinates all children under ____ against polio.\Question: Choose the right answer from options given a) zero b) four c) ten d) five

SOLUTION: b

PROBLEM: Cancer affects ____ out of four families in America today.\Question: Choose the right answer from options given a) seven b) ten c) three d) four

SOLUTION:
c