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: Color codes are ____ digit combinations of letters and numbers that correspond to a specific color.\Question: Choose the right answer from options given a) six b) eight c) seven d) one

Answer: a


Question: Turtle grass has long, leafy blades that usually occur in bundles of ____ to seven.\Question: Choose the right answer from options given a) two b) seven c) six d) three

Answer:
d