The sentence whose subject is the subject of the whole paragraph is the

topic sentence
thesis sentence
controlling idea
sentence fragment

The sentence whose subject is the subject of the whole paragraph is the Topic sentence.

innocence can be defined as the lack of sin, relating it with the lack of guilt, also it can be a synonime of naivety. most people agree that sins are made out of experiences, intentionally or not, as well as you stop being naive once certain things happen to you throughout your life. so, with this explained, the chosen answers are:

when the boy saw the effects of war, he no longer viewed life as innocent.

the loss of innocence is a result of gaining experience and making mistakes.

one way to define innocence is as a lack of worldly experience or sophistication.

um, what am i suppose to answer here? it just said that he will studied hared because of a grade in spanish.