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]: Embrasures have ____ functions.\Question: Choose the right answer from options given a) three b) seven c) zero d) nine
[EX A]: a

[EX Q]: Chickens take about six to ____ weeks to grow.\Question: Choose the right answer from options given a) eight b) two c) no d) five
[EX A]: a

[EX Q]: Fothergillas have ____ serious insect or disease problems.\Question: Choose the right answer from options given a) four b) zero c) no d) two
[EX A]:
c