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: Female elephants have babies about ____ years apart, and they have only one each time.\Question: Choose the right answer from options given a) eight b) one c) zero d) three

SOLUTION: d

PROBLEM: Basting is the stitching used to hold the ____ layers of fabric together while quilting.\Question: Choose the right answer from options given a) four b) six c) three d) ten

SOLUTION: c

PROBLEM: Normal cells have ____ copies of each gene.\Question: Choose the right answer from options given a) four b) one c) two d) five

SOLUTION:
c