Which of the following is another name for sentiment analysis?

A) Netnography.
B) Web crawling.
C) Opinion mining.
D) Content analysis.
E) Focus group research.

Sentiment analysis is also known as opinion mining, which involves the use of natural language processing and machine learning to identify and extract subjective information from textual data. A, B, D, and E are all different methods used in market research and analytics. Netnography is the study and analysis of online communities and cultures, web crawling refers to automated browsing of web pages, content analysis is a technique used to analyze qualitative data, and focus group research involves gathering a group of individuals to discuss and provide feedback on a product or service.