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').
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Question: Babies are breast-fed until about ____ years of age.\Question: Choose the right answer from options given a) four b) nine c) eight d) two

Answer: d

Question: Men are ____ times as likely to commit suicide than women.\Question: Choose the right answer from options given a) seven b) two c) four d) one

Answer: c

Question: Inflorescence is characterized by extra spikelets at the ____ upper nodes.\Question: Choose the right answer from options given a) two b) nine c) eight d) three

Answer:
d