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').

[EX Q]: Smoking is responsible for one out of ____ American deaths.\Question: Choose the right answer from options given a) five b) six c) nine d) seven
[EX A]: a

[EX Q]: Bulls can stand as tall as ____ feet at the shoulders.\Question: Choose the right answer from options given a) one b) five c) seven d) four
[EX A]: b

[EX Q]: Wild dogs have ____ digits on each foot.\Question: Choose the right answer from options given a) five b) no c) four d) one
[EX A]:
c