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').
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Question: Human malaria is caused by ____ species of Plasmodium . .\Question: Choose the right answer from options given a) six b) ten c) seven d) four

Answer: d


Question: Echinoderms usually have ____ appendages, but there are some exceptions.\Question: Choose the right answer from options given a) ten b) five c) seven d) three

Answer: b


Question: Thrips have ____ pair of wings fringed with fine hairs.\Question: Choose the right answer from options given a) nine b) two c) eight d) three

Answer:
b