Final answer:
The word "wag" usually refers to the back and forth movement of a dog's tail. The correct match is distort.
Step-by-step explanation:
The word "wag" usually refers to the back and forth movement of a dog's tail. When a dog is happy and excited, its tail wags from side to side. Therefore, the correct match for the word "wag" is c) distort. This is because when something is distorted, it is twisted or bent out of its normal shape, which can be similar to the movement of a wagging tail.