Which type of analysis in NLP emphasizes sentence structure?

Syntactic analysis is the correct choice because it focuses specifically on the arrangement of words and phrases to create well-formed sentences in a language. This type of analysis looks at grammar rules, sentence structure, and the relationships between words to understand the syntactic patterns in text. Syntactic analysis plays a crucial role in various NLP applications, such as parsing, where the goal is to define a structure that can represent the grammatical relationships in a sentence.

In contrast, semantic analysis is concerned with meaning and how words combine to convey ideas. Pragmatic analysis deals with context and how situational factors affect understanding, while sentimental analysis focuses on determining the sentiment or emotional tone expressed in text. Each of these types has its own purpose within the field of natural language processing, but for understanding sentence structure specifically, syntactic analysis is the appropriate choice.