Which Internet marketing practice involves studying trends associated with particular population groups?

The correct answer is demographics because this practice specifically involves the study of various characteristics of a population. This can include age, gender, income level, education, and various other relevant factors that help marketers understand who their consumers are. By analyzing demographic data, companies can tailor their marketing strategies to effectively target specific groups, ensuring that their campaigns resonate with the intended audience.

Understanding demographics is crucial for developing effective marketing strategies, as it allows businesses to identify and segment their target markets based on shared characteristics. This focused approach leads to more personalized marketing efforts, which can enhance customer engagement and conversion rates.

While the other options are related to marketing, they do not specifically focus on the trends associated with population groups as demographics do. For instance, analytics encompasses the measurement and interpretation of data to assess the performance of marketing efforts. Market segmentation refers to dividing a market into distinct groups based on shared characteristics, which is a broader technique that may use demographic information but is not exclusively about studying population trends. Consumer behavior analysis studies how people make purchasing decisions, which is a different aspect of marketing research altogether.