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: Songbirds have ____ sets of vocal chords.\Question: Choose the right answer from options given a) six b) two c) eight d) ten

SOLUTION: b

PROBLEM: Children now account for only ____ percent of all forest fires caused in the United States.\Question: Choose the right answer from options given a) five b) four c) eight d) nine

SOLUTION: b

PROBLEM: Horses can lose five to ____ percent of their body weight during strenuous competition.\Question: Choose the right answer from options given a) two b) nine c) ten d) one

SOLUTION:
c