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 viruses have only ____ organelles.\Question: Choose the right answer from options given a) ten b) two c) four d) eight

Ex Output:
b


Ex Input:
Tropical trees can be rampant growers, and can outgrow a wiring in as little as ____ days' time.\Question: Choose the right answer from options given a) four b) eight c) six d) ten

Ex Output:
d


Ex Input:
Pork contains high quality complete protein with all ____ essential amino acids.\Question: Choose the right answer from options given a) two b) nine c) no d) one

Ex Output:

b