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]: Lizards generally have ____ legs and movable eyelids.\Question: Choose the right answer from options given a) four b) two c) five d) zero
[A]: a


[Q]: Digital bandwidth enables signal to be condensed as a five to ____ ratio.\Question: Choose the right answer from options given a) one b) nine c) seven d) six
[A]: a


[Q]: Ribosomes have ____ subunits, one slightly larger than the other.\Question: Choose the right answer from options given a) nine b) no c) zero d) two
[A]:
d