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:
Fluorescent lamps are roughly ____ times more intense than ordinary lightbulbs.\Question: Choose the right answer from options given a) six b) one c) three d) eight

Ex Output:
c


Ex Input:
Cats have ____ toes on their front paws, but only four touch the ground when walking.\Question: Choose the right answer from options given a) six b) nine c) five d) zero

Ex Output:
c


Ex Input:
Neonatal death is the term used when a baby dies within ____ weeks of birth.\Question: Choose the right answer from options given a) three b) four c) six d) eight

Ex Output:

b