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 bacteria have one or ____ circular chromosomes.\Question: Choose the right answer from options given a) ten b) eight c) six d) two

Ex Output:
d


Ex Input:
Flatbed scanners can also record ____ dimensional objects of many sizes and shapes.\Question: Choose the right answer from options given a) eight b) one c) four d) three

Ex Output:
d


Ex Input:
Calves remain hidden for much of the time, and are weaned by ____ months of age.\Question: Choose the right answer from options given a) six b) three c) eight d) one

Ex Output:

b