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]: Scientists divide bats into ____ groups.\Question: Choose the right answer from options given a) five b) two c) one d) zero
[EX A]: b

[EX Q]: Poodles have ____ legs.\Question: Choose the right answer from options given a) one b) four c) six d) nine
[EX A]: b

[EX Q]: Cats There are thirty ____ recognised species of cats and a whole host of subspecies or races.\Question: Choose the right answer from options given a) nine b) six c) zero d) five
[EX A]:
d