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').
--------
Question: Ants have six legs, and each leg has ____ joints.\Question: Choose the right answer from options given a) nine b) zero c) two d) three

Answer: d


Question: Bilingual teachers are more than people who speak ____ languages.\Question: Choose the right answer from options given a) five b) two c) three d) ten

Answer: b


Question: Ionized water is up to ____ times more hydrating than conventional water.\Question: Choose the right answer from options given a) seven b) six c) no d) zero

Answer:
b