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').

[Q]: Lung disease is America's number three killer, responsible for ____ in seven deaths.\Question: Choose the right answer from options given a) five b) nine c) one d) four
[A]: c


[Q]: Rapid growth occurs for the first ____ years of life.\Question: Choose the right answer from options given a) eight b) ten c) three d) five
[A]: d


[Q]: Women devote their lives to raising families of six, ____ and eight children.\Question: Choose the right answer from options given a) seven b) zero c) five d) one
[A]:
a