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: Human feet bear average five to ____ hundreds tons of weight everyday.\Question: Choose the right answer from options given a) six b) eight c) five d) nine

SOLUTION: a

PROBLEM: Matter exists in ____ forms, solid, fluid and plasma.\Question: Choose the right answer from options given a) ten b) nine c) three d) five

SOLUTION: c

PROBLEM: Most females can mate once every three or ____ years.\Question: Choose the right answer from options given a) four b) zero c) seven d) three

SOLUTION:
a