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').

Trains kill ____ people every year.\Question: Choose the right answer from options given a) zero b) three c) no d) four
d

Oranges signify good health, and the number ____ sounds like the word for prosperity.\Question: Choose the right answer from options given a) eight b) ten c) seven d) five
a

Commercial standards require that urchins be at least ____ percent roe by weight.\Question: Choose the right answer from options given a) one b) ten c) six d) nine

b