the answer is they often contain biases :)
Variables can be useful because they hold a certain number/data value that can easily be accessed and changed. For example, in a game, a players score is a variable that changes as the player gets more points; ie coins, items, etc.
Answer:
Rotation of an image
Explanation:
The correct answer is - Rotation of an image
Reason -
When you rotate an object, it moves left or right around an axis and keeps the same face toward you.
When you flip an object, the object turns over, either vertically or horizontally, so that the object is now a mirror image.