Answer:
Four-core processor
Explanation:
A four-core processor also known as a quad-core processor has four units cores that are independent and are responsible for reading and executing instruction in the central processing unit of a computer or system. It has high processing speed and is the best for gaming, and for multitasking purposes.
Well, I think that maybe the answer is B or C. She shouldn't only look at her presentation while she is presenting it, that doesn't look professional, and you want to look at the people you are talking to.
CPU (Central Processing Unit) is also known as the brain of the computer because this is the place which actually runs the programs. The programs are the set of instructions needed to perform a task.
B.................................