What emphasizes extensive user involvement in the rapid and evolutionary construction of working prototypes of a system to accelerate the systems development process?

The correct answer to the following question will be "RAD methodology".

Explanation:

It is indeed a kind of tactical technique of application development that emphasizes fast launches of prototypes and implementations.

RAD promotes further use of tools and consumer input over rigid preparation and the documentation of specifications. It's being used when developers are widely accessible for development as well as the expenditure is high sufficiently cover their costs together with the expense of advanced code generation devices.

So, it's the right answer.