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: Sexual maturity is reached at about ____ years of age.\Question: Choose the right answer from options given a) five b) ten c) no d) two

SOLUTION: d

PROBLEM: Genetic mapping divides the chromosomes in ____ bands.\Question: Choose the right answer from options given a) ten b) two c) four d) nine

SOLUTION: b

PROBLEM: Dogs take between ____ and thirty breaths a minute, depending on their size.\Question: Choose the right answer from options given a) seven b) ten c) two d) five

SOLUTION:
b