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]: 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]: Female cats have ____ X's in each cell.\Question: Choose the right answer from options given a) five b) two c) one d) ten
[A]: b


[Q]: Droplet transmission has a specific mechanism of transfer, and droplets are ____ microns or larger.\Question: Choose the right answer from options given a) two b) three c) four d) five
[A]:
d