Which is a main function of the ‘deliver the capabilities’ process?

Comprehensive and Detailed Explanation From Exact Extract:

The purpose of the “Deliver the Capabilities” process is to manage and coordinate the delivery of outputs from projects and other work that collectively contribute to desired outcomes.

According to MSP Foundation, 5th Edition:

“This process is responsible for overseeing the delivery of the programme’s defined capabilities—how outcomes will be achieved through related delivery projects and enabling activities.”

Hence, A is the correct answer.