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]: Most people have ____ kidneys.\Question: Choose the right answer from options given a) two b) five c) seven d) six
[EX A]: a

[EX Q]: Conflict occurs between when ____ people have a car accident.\Question: Choose the right answer from options given a) no b) eight c) two d) nine
[EX A]: c

[EX Q]: 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
[EX A]:
b