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]: Beavers live in families that include an adult pair and ____ to three years worth of offspring.\Question: Choose the right answer from options given a) no b) one c) four d) ten
[A]: b


[Q]: Mosquitoes have three body parts and ____ legs.\Question: Choose the right answer from options given a) two b) nine c) six d) eight
[A]: c


[Q]: Gibberellins are diterpenoids derived from ____ isoprenoid units forming a system of four rings.\Question: Choose the right answer from options given a) ten b) four c) zero d) eight
[A]:
b