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: Right whales are slow swimmers, averaging just ____ miles per hour.\Question: Choose the right answer from options given a) nine b) six c) two d) five

SOLUTION: b

PROBLEM: Fever usually lasts for an average of ____ days in adults.\Question: Choose the right answer from options given a) zero b) three c) nine d) two

SOLUTION: b

PROBLEM: Lobsters have ____ distinctive life stages with separate ecologies and behaviors.\Question: Choose the right answer from options given a) six b) three c) zero d) two

SOLUTION:
b