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').

Most toddlers find it hard to sit still for more than a few seconds, let alone ____ minutes.\Question: Choose the right answer from options given a) no b) three c) four d) zero
b

Hamsters can live to be three to ____ years old.\Question: Choose the right answer from options given a) four b) two c) three d) nine
a

Pigs spawn in groups of either ____ or four.\Question: Choose the right answer from options given a) nine b) seven c) three d) five

c