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').

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


[Q]: Carbon can bond to a maximum of ____ atoms.\Question: Choose the right answer from options given a) six b) ten c) five d) four
[A]: d


[Q]: Sculpture involves the ____ different processes of carving and modeling.\Question: Choose the right answer from options given a) five b) three c) two d) ten
[A]:
c