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').

All baleen whales have ____ blow holes.\Question: Choose the right answer from options given a) zero b) four c) seven d) two
d

Today there are ____ UK hospitals doing heart transplants.\Question: Choose the right answer from options given a) three b) five c) six d) nine
d

Whole blood contains all ____ components and is sometimes used to treat acute hemorrhage patients.\Question: Choose the right answer from options given a) nine b) four c) three d) seven

b