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').

[EX Q]: Big bluestem grows up to ____ feet tall.\Question: Choose the right answer from options given a) seven b) no c) nine d) eight
[EX A]: c

[EX Q]: Ultrasonic liposuction fits into ____ categories.\Question: Choose the right answer from options given a) two b) seven c) nine d) one
[EX A]: a

[EX Q]: Primary conflict occurs when the norms of ____ cultures clash.\Question: Choose the right answer from options given a) one b) six c) no d) two
[EX A]:
d