Which of the following is an example of personal data?

• A. Your bank details
• B. Your favorite color
• C. Your password
• D. Your shoe size

Answer: (A)

Personal data is information about a living person that can identify them or be linked to them. Bank details directly relate to you and identify which account belongs to you, making them clearly personal data. They also reveal financial information that could be misused if exposed, so they’re treated as highly sensitive. The other options describe a preference (favorite color) or a physical trait (shoe size) or a security credential (password); while related to you, they’re not as clearly about identifying you or accessing your finances in the same way.