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').

Alcoholics are nearly ____ times more likely than others to die in motor vehicle crashes.\Question: Choose the right answer from options given a) ten b) eight c) six d) five
d

Collars come in ____ shapes.\Question: Choose the right answer from options given a) six b) two c) four d) zero
b

Particulate filters can increase the useful life of a coalescer by up to ____ times.\Question: Choose the right answer from options given a) six b) three c) no d) ten

a