To move a horse from one place to another you should use a halter and lead rope.
Halter
A headcollar
The basic harness item your horse should have is a breastplate or standing martingale
a halter
A halter
does a horse pull a cart with the harness, or does a horse push the cart with harness from the front
It means that the horse has the correct qualities needed to be a harness horse.
A halter.
If you are leading (walking) a horse around, then a halter. If you are riding him, a bridle.
A halter is the basic piece of tack used to move your horse from one place to another.
A halter and lead rope
The answer is either a halter or bridle