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').

[Q]: Dogs are pack animals, and ____ dogs is the minimum number for proper socialization.\Question: Choose the right answer from options given a) four b) five c) no d) zero
[A]: b

[Q]: Babies show an interest in solid foods when they are approximately four to ____ weeks old.\Question: Choose the right answer from options given a) nine b) eight c) five d) six
[A]: c

[Q]: Seals swim to the surface to breathe every ____ to fifteen minute.\Question: Choose the right answer from options given a) five b) seven c) six d) zero
[A]:
a