Full from of RPM in computer is Revolutions Per Minute.
Answer:
The correct option is communication diagram
Explanation:
The communication diagram represents the change of values for an item by a system.
A communication diagram is an expansion of the diagram of objects showing the objects together with the texts traveling from one to another. Besides the connections between objects, the communication diagram demonstrates the messages that the objects send to one another.
The correct option is a) communication diagram
Gray isn't a color to be exact it a shade or what some people call it a shadow just like black but if you add more gray to a look lets say RED it will make it kinda faddy and more darker then it was