_________ is a tool that can hide processes from the process list, can hide files, registry entries,

_________ is a tool that can hide processes from the process list, can hide files, registry entries, and intercept keystrokes.

A.
Trojan

B.
RootKit

C.
DoS tool

D.
Scanner

E.
Backdoor

Explanation:
Rootkits are tools that can hide processes from the process list, can hide files, registry entries, and intercept keystrokes.