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: 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: Females have two X-chromosomes, ____ from each parent.\Question: Choose the right answer from options given a) ten b) four c) one d) zero

SOLUTION: c

PROBLEM: Ozone is a gas that is composed of ____ atoms of oxygen.\Question: Choose the right answer from options given a) three b) ten c) eight d) nine

SOLUTION:
a