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').

Ascidian tunicates come in ____ main forms.\Question: Choose the right answer from options given a) three b) zero c) four d) eight
a

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

Soccer is a sport that runs all year round with three days of practice for ____ hours each day.\Question: Choose the right answer from options given a) six b) three c) five d) two

b