instruction:
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:
Many aneurysms have ____ symptoms until they burst.\Question: Choose the right answer from options given a) no b) five c) six d) seven
answer:
a

question:
Military service is fulfilled by voluntary enlistment, generally for a period of ____ years.\Question: Choose the right answer from options given a) four b) one c) nine d) two
answer:
c

question:
Plants are usually less than ____ feet tall, but can be up to ten feet tall near water.\Question: Choose the right answer from options given a) six b) three c) one d) ten
answer:
b