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

A: a
****
Q: Urea cycle requires the coordination of ____ different tissues.\Question: Choose the right answer from options given a) two b) four c) nine d) zero

A: a
****
Q: Lobsters use their ____ pairs of antennas as sensors.\Question: Choose the right answer from options given a) nine b) three c) eight d) two

A:
b
****