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]: Children are more likely than adults to show ____ symptoms even if they are infected.\Question: Choose the right answer from options given a) eight b) two c) no d) six
[EX A]: c

[EX Q]: Babies show an interest in solid foods when they are approximately four to ____ weeks old.\Question: Choose the right answer from options given a) nine b) eight c) five d) six
[EX A]: c

[EX Q]: Rabbits can live for ____ years or more .\Question: Choose the right answer from options given a) no b) five c) six d) ten
[EX A]:
b