The Primary Purpose of a Plug-In Is To

Multiple Choice

The primary purpose of a plug-in is to:

A) test the user's browser and upgrade, if needed, to a browser version that supports multimedia formats.
B) identify the version of the user's operating system to determine which multimedia formats are supported.
C) take the form of a new user interface to process multimedia files through an encoding application.
D) extend the functionality of the user's browser by providing seamless integration of multimedia formats.