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').

Some infected people have ____ symptoms at all.\Question: Choose the right answer from options given a) four b) eight c) no d) five
c

Some skulls show the marks of up to ____ bullets.\Question: Choose the right answer from options given a) five b) three c) eight d) six
d

Quarks can have ____ colors, red, green and blue.\Question: Choose the right answer from options given a) nine b) four c) three d) eight

c