The correct answer is D. 3124.
The word “malaria” is a noun that refers to a disease caused by a parasite that is transmitted to humans through the bite of an infected mosquito. The word “of” is a preposition that can be used to indicate possession, origin, or a part of something. The word “he” is a pronoun that refers to a male person. The word “died” is a verb that means to stop living.
In the sentence “He died of malaria,” the word “he” is the subject of the sentence. The word “died” is the verb of the sentence. The word “of” is a preposition that indicates that the subject of the sentence died from the disease malaria. The word “malaria” is the object of the preposition “of.”
The other options are incorrect because they do not make sense in the context of the sentence. Option A, 2413, is incorrect because the word “malaria” comes before the word “of.” Option B, 3421, is incorrect because the word “of” comes before the word “he.” Option C, 3214, is incorrect because the word “he” comes before the word “died.”