Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
A. Ram was sitting on a tree and was eating an apple.
B. The monkey had thrown an apple at him.
C. While eating the apple, something hit his head.
D. He looked up to find a monkey sitting on a branch of the tree.

Let's analyze the sequence logically:
Sentence A introduces the starting action: Ram sitting on a tree eating an apple. This is the ideal introductory sentence.

Sentence C continues the narrative ("While eating the apple...") and introduces an event: something hitting his head. Thus, C follows A.

Sentence D explains Ram's reaction to getting hit: he looked up and found a monkey. So, D follows C.

Sentence B clarifies what happened: the monkey had thrown an apple at him. So, B follows D.

The correct sequence is ACDB. Therefore, option C is correct.