The software maintenance and support work starts once the delivery of the software product is done. Which of the following is not considered a category of application maintenance activities?

Correction refers to fixing defects found in the software after release, making it a primary maintenance activity.

Adaptation involves modifying the software to operate in a changed environment (e.g., new OS, hardware, or regulations), which is a common maintenance task.

Diversification, which implies expanding into new product lines or markets, is a business strategy and not a standard category of software maintenance activities. Software maintenance typically involves fixing defects, adapting to new environments, or improving performance.

Prevention, or preventive maintenance, focuses on modifying software to detect and correct potential faults before they become actual failures, thereby improving system reliability.