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').

[Q]: Polyester has ____ favorable properties.\Question: Choose the right answer from options given a) four b) two c) seven d) six
[A]: b


[Q]: Laparoscopic surgery is performed via three or ____ small incisions in the abdomen.\Question: Choose the right answer from options given a) nine b) six c) five d) four
[A]: d


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