What aspect does a survey primarily focus on in research?

The primary focus of a survey in research is to gather opinions and information from respondents. Surveys are designed to collect data on people's beliefs, attitudes, preferences, and behaviors, allowing researchers to understand various aspects of a particular subject matter. This type of data collection is particularly valuable when seeking insights into how a target audience views a product, service, or concept, and it often uses structured questions that can quantify respondents' feedback.

In contrast, analyzing sales data over a year, understanding financial performance, and evaluating employee satisfaction may involve other methods of research or data analysis that do not primarily rely on gathering subjective feedback. While these aspects can be important in their own right, they do not capture the essence of what surveys are designed to do: solicit input directly from individuals or groups to gain insights that can influence decision-making and strategy in marketing or organizational contexts.