The concept of "space" on a computer usually refers to the___.

Option "A" is the correct answer to the following question.

Explanation:

Word 'Space' use for total storage available in hard drive.

Free storage in the hard drive is commonly called space, space is an empty place similarly free or empty space in a hard drive called "Space".

Usually, the term space is used for the empty place, so we can say that the appropriate choice is correct.