when you an image, the number of pixels in the image changes. crop mask rotate skew

when you an image, the number of pixels in the image changes. crop mask rotate skew
Answer
Brief Explanations:
Cropping an image removes parts of it, thus changing the number of pixels. Masking just hides parts without changing pixel count, rotating and skewing don't change the number of pixels present in the image data but may change their arrangement.
Answer:
crop