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]: Government buildings fly flags of the ____ nations.\Question: Choose the right answer from options given a) ten b) no c) seven d) two
[EX A]: d

[EX Q]: Bulbs bloom four to ____ weeks after planting.\Question: Choose the right answer from options given a) seven b) one c) six d) nine
[EX A]: c

[EX Q]: Granite weathers one inch in ____ thousand years.\Question: Choose the right answer from options given a) four b) five c) ten d) six
[EX A]:
c