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]: Control is defined as a dead plant with ____ signs of life.\Question: Choose the right answer from options given a) ten b) nine c) no d) zero
[EX A]: c

[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]: Adaptation is considered to take place in one biological and ____ psychosocial modes.\Question: Choose the right answer from options given a) two b) three c) six d) nine
[EX A]:
b