Final answer:
The radial artery is the most easily accessible artery at the wrist for taking a pulse, due to its location near the surface and its parallel position alongside the radius bone in the forearm.
Step-by-step explanation:
The most easily accessible artery at the wrist where the pulse is taken is the radial artery. Pulse can be palpated manually by pressing lightly with the fingertips on an artery near the body surface, and although there are multiple places on the body where a pulse can be measured, the radial artery is the most readily accessible for this purpose. The radial artery is found at the bifurcation of the brachial artery, runs parallel to the radius bone in the forearm, and supplies blood to the lower arm and carpal region.