What is data visualization?

Data visualization is the graphical representation of information and data to communicate insights effectively. This practice allows individuals and organizations to see patterns, trends, and correlations within data sets that might go unnoticed in textual or numerical formats. By using charts, graphs, and other visual tools, data visualization enhances understanding and assists in decision-making processes. It transforms complex data into a visual context, making it easier for audiences to grasp important insights.

In contrast, optimizing website performance involves improving various aspects of a website to enhance user experience and speed, which is not directly related to visual representation of data. The process of collecting personal data from users refers to gathering information for analysis or marketing, but it does not involve representing that information visually. Encrypting sensitive information pertains to securing data to prevent unauthorized access, which also does not relate to visualization. The focus of data visualization is solely on conveying information through visual means, making option A the correct choice.