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]: Pistillate flowers have a compound ovary with ____ locules topped by three sticky, sessile stigmas.\Question: Choose the right answer from options given a) zero b) three c) six d) seven
[EX A]: b

[EX Q]: Healthcare providers diagnose ____ general types of insomnia.\Question: Choose the right answer from options given a) two b) eight c) one d) three
[EX A]: a

[EX Q]: Most ceramics are made up of ____ or more elements.\Question: Choose the right answer from options given a) five b) seven c) zero d) two
[EX A]:
d