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 Input:
Most roots require from ____ to six weeks to dry sufficiently to be safe.\Question: Choose the right answer from options given a) two b) four c) eight d) three

Ex Output:
d


Ex Input:
Mosquitoes have ____ distinctive life stages, with the first three stages being spent in the water.\Question: Choose the right answer from options given a) four b) zero c) nine d) five

Ex Output:
a


Ex Input:
Loons typically produce ____ eggs each year.\Question: Choose the right answer from options given a) two b) four c) zero d) one

Ex Output:

a