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').

[EX Q]: Scorpions can live for ____ to seven years.\Question: Choose the right answer from options given a) one b) six c) five d) three
[EX A]: d

[EX Q]: Cats have ____ sets of vocal cords.\Question: Choose the right answer from options given a) zero b) nine c) two d) three
[EX A]: c

[EX Q]: Some verbs have ____ stems in the subjunctive.\Question: Choose the right answer from options given a) two b) ten c) eight d) one
[EX A]:
a