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:
Ladybugs have ____ legs and keep their wings tucked away until they are ready to fly.\Question: Choose the right answer from options given a) six b) eight c) one d) zero

Ex Output:
a


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:
Females like to care for three to four babies at a time because ____ cub is a waste of time.\Question: Choose the right answer from options given a) seven b) two c) zero d) one

Ex Output:

d