In Image Image size…: If you want to change your document size without inventing or throwing away any pixels:
A)Click the Resample Image box Off.
B)Click the Resample Image box On.
C)Change the Pixels box to Percent.
D)Hold down the Option (Alt) key to make changes.

Question

In Image > Image size…: If you want to change your document size without inventing or throwing away any pixels:
A)Click the Resample Image box Off.
B)Click the Resample Image box On.
C)Change the Pixels box to Percent.
D)Hold down the Option (Alt) key to make changes.

Quizplus · Accepted Answer

Turning off the Resample Image box will prevent any pixel data from being discarded or invented, allowing you to change the size of the document without affecting the image quality.

In Image > Image Size…: If You Want to Change