Question

to save and store data separate from a computer, it helps to have an
internet cache.
internet history.
internal hard drive.
external hard drive.

Explanation:

An external hard drive is a storage device that can be connected to a computer but is physically separate from it. It is used to save and store data outside of the computer's internal storage. Internet cache stores temporary data from websites visited. Internet history records the web pages visited. An internal hard drive is part of the computer's internal storage.

Answer:

external hard drive.