Answer:
The answer is (a).Presentation Layer
Explanation:
This layer is located at the 6th level of the OSI model, responsible for delivering and formatting the information to the upper layer for further processing. This service is needed because different types of computer uses different data representation. The presentation layer handles issues related to data presentation and transport, including encryption,translation and compression.
To modulate your voice is to modify or gain more control of your voice. It basically means to change or adjust the pitch or tone.
The code that is executed when the user clicks a button is known as
the widget (w)