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]: Most spiders have ____ eyes, some only six and several have fewer or none.\Question: Choose the right answer from options given a) ten b) two c) eight d) no
[EX A]: c

[EX Q]: Avian kidneys have ____ kinds of nephrons.\Question: Choose the right answer from options given a) four b) eight c) no d) two
[EX A]: d

[EX Q]: Bees often look like they have ____ wings.\Question: Choose the right answer from options given a) eight b) one c) no d) two
[EX A]:
d