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: 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: Classes play ____ distinct roles in object-oriented programming.\Question: Choose the right answer from options given a) eight b) zero c) two d) no

Answer: c


Question: Trees grow rapidly, often ____ to four feet or more in a single growing season.\Question: Choose the right answer from options given a) three b) eight c) nine d) zero

Answer:
a