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]: Natural indium contains ____ isotopes.\Question: Choose the right answer from options given a) one b) eight c) two d) seven
[EX A]: c

[EX Q]: Ladybugs have ____ legs and keep their wings tucked away until they are ready to fly.\Question: Choose the right answer from options given a) six b) eight c) one d) zero
[EX A]: a

[EX Q]: South Bend has ____ distinct seasons of the year.\Question: Choose the right answer from options given a) six b) four c) ten d) one
[EX A]:
b