On a school app, a student writes, “This app is very useful and has made studying easier.” In sentiment analysis, which category should an NLP system assign to this sentence?

Correct answer: Positive sentiment

Sentiment analysis identifies the attitude or emotional polarity expressed in text. The phrases “very useful” and “made studying easier” communicate approval, benefit, and satisfaction, so the sentence has positive sentiment and option A is correct. It is not neutral because it contains an evaluation, not negative because no criticism is expressed, and not mixed because opposing emotions are absent.