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').
--------
Question: Cattle are the second most important commodity in ____ states and third in six states.\Question: Choose the right answer from options given a) nine b) five c) no d) eight

Answer: a


Question: Elephants give birth to ____ calf every four to nine years on average.\Question: Choose the right answer from options given a) ten b) one c) eight d) six

Answer: b


Question: Some kudzu takes as long as ____ years to kill, even with the most effective herbicide.\Question: Choose the right answer from options given a) zero b) five c) one d) ten

Answer:
d