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: Casinos have no windows and they have ____ clocks.\Question: Choose the right answer from options given a) six b) four c) eight d) no

SOLUTION: d

PROBLEM: Springtails reproduce quickly usually within three to ____ weeks.\Question: Choose the right answer from options given a) five b) six c) nine d) three

SOLUTION: a

PROBLEM: Protein synthesis occurs in ____ generally recognized stages.\Question: Choose the right answer from options given a) nine b) four c) five d) three

SOLUTION:
b