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').

National forests have regulations that restrict ____ wheeler use to established roads.\Question: Choose the right answer from options given a) no b) four c) six d) nine
b

Ostriches have ____ stomachs.\Question: Choose the right answer from options given a) four b) nine c) eight d) three
d

Pickpockets usually work in teams of two or ____ people.\Question: Choose the right answer from options given a) three b) one c) two d) zero

a