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').

[Q]: Photosynthesis occurs in ____ phases.\Question: Choose the right answer from options given a) four b) two c) nine d) five
[A]: b


[Q]: Reliability affects the production of goods in ____ distinct ways.\Question: Choose the right answer from options given a) one b) eight c) six d) three
[A]: d


[Q]: Rice is a fair source of protein containing all ____ essential amino acids.\Question: Choose the right answer from options given a) two b) no c) nine d) eight
[A]:
d