Finish the following sentence with the best choice: how do you walk a dog?

Choices:
- attach a leash to the dog's collar, and then let it walk in front of you outside, but hold on to the leash to maintain the power.
- let it run free outside.

Answer:
attach a leash to the dog's collar, and then let it walk in front of you outside, but hold on to the leash to maintain the power.