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').

Collars come in ____ shapes.\Question: Choose the right answer from options given a) six b) two c) four d) zero
b

Vaporization can occur in temperatures as low as ____ degrees.\Question: Choose the right answer from options given a) one b) zero c) eight d) two
b

Dinoflagellates have ____ dissimilar flagella.\Question: Choose the right answer from options given a) two b) eight c) one d) zero

a