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]: Hybridization is the practice of ____ different species interbreeding.\Question: Choose the right answer from options given a) no b) one c) two d) three
[EX A]: c

[EX Q]: Widowed men are ____ times as likely to be murdered.\Question: Choose the right answer from options given a) two b) four c) three d) no
[EX A]: b

[EX Q]: Concentration is when ____ afflictions arise from within.\Question: Choose the right answer from options given a) one b) no c) nine d) three
[EX A]:
b