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').
--------
Question: 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

Answer: b


Question: Vaccination typically occurs at ____ to eight weeks of age in kittens.\Question: Choose the right answer from options given a) three b) nine c) six d) no

Answer: c


Question: Tonsils are very small at birth, enlarge gradually, and reach maximum size at age ____ or seven.\Question: Choose the right answer from options given a) zero b) three c) six d) eight

Answer:
c