What can you hold in your right hand but never in your left hand? (19/31)

Since your left hand cannot support something on your arm behind your left shoulder, the fingertips on your left hand, left forearm, left elbow, left bicep, and so on.

Some people would struggle to hold their left shoulders, but it would also be due to stability and the relative size of one’s arm. And the answer is the ‘Left hand.’