A. background-attachment
B. background
C. background-repeat
D. background-position

Solution

A. background-attachment

Explanation

The CSS property used to control the scrolling of an image in the background is background-attachment. This property can take one of the following values:

• scroll: The background image scrolls along with the containing element's content.
• fixed: The background image remains fixed as the user scrolls, creating a parallax effect.