Final answer:
The related processing category for selling personal information as a business process is data brokering.
Step-by-step explanation:
If your purpose for carrying out a business process is to sell personal information, the related processing category must be data brokering. Data brokering refers to the practice of collecting personal information from individuals and selling it to third parties for various purposes, such as marketing or research.
This activity involves the transfer of personal data from one party to another, typically without the knowledge or consent of the individuals involved.