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: Young emus are very vulnerable to disease until they are about ____ months old.\Question: Choose the right answer from options given a) no b) ten c) six d) three

SOLUTION: d

PROBLEM: Clover leaves with ____ to nine leaflets, illustrating a tendency to mutate.\Question: Choose the right answer from options given a) three b) zero c) ten d) five

SOLUTION: a

PROBLEM: Hard ticks have ____ distinct life stages.\Question: Choose the right answer from options given a) three b) four c) nine d) six

SOLUTION:
a