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]: Fats come in ____ different forms saturated and unsaturated.\Question: Choose the right answer from options given a) no b) two c) six d) seven
[EX A]: b

[EX Q]: Most spiders have ____ eyes and eight legs.\Question: Choose the right answer from options given a) eight b) five c) no d) three
[EX A]: a

[EX Q]: Adult roundworms have a funny face, with ____ big lips surrounding their mouth.\Question: Choose the right answer from options given a) one b) nine c) five d) three
[EX A]:
d