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: Nymphs emerge in ____ to seven days and flatten themselves against the leaf to feed.\Question: Choose the right answer from options given a) one b) five c) nine d) two

SOLUTION: b

PROBLEM: Ground squirrels breed once a year, averaging ____ to eight per litter.\Question: Choose the right answer from options given a) seven b) one c) six d) ten

SOLUTION: a

PROBLEM: Alkaline batteries last ____ to eight times as long as zinc-carbon cells, their predecessors.\Question: Choose the right answer from options given a) seven b) one c) five d) six

SOLUTION:
c