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]: Piglets normally grow about half their potential growth rate from birth to ____ weeks of age.\Question: Choose the right answer from options given a) zero b) no c) five d) three
[EX A]: d

[EX Q]: Moles breed in late winter or spring and have a gestation period of ____ to six weeks.\Question: Choose the right answer from options given a) nine b) four c) six d) five
[EX A]: b

[EX Q]: Pratincoles have ____ toes, short bills and legs, long, pointed wings, and forked tails.\Question: Choose the right answer from options given a) ten b) four c) zero d) eight
[EX A]:
b