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').

Some skulls show the marks of up to ____ bullets.\Question: Choose the right answer from options given a) five b) three c) eight d) six
d

Nymphs feed and mature through five instars in about ____ to eight weeks.\Question: Choose the right answer from options given a) six b) five c) seven d) zero
a

Some houses have as many as ____ people living in one room.\Question: Choose the right answer from options given a) seven b) one c) ten d) no

c