therapeutic cloning is duplicating part of a person e. g, a heart or liver, or even just a few cells true or false?

True.

Explanation:

Therapeutic cloning is the technique of using cloning procedures to generate embryonic stem cells that can be applied for the damaged organ or tissue replacement without getting the chances of any rejection. This can be achieved by putting a diploid nucleus from a body cell to a enucleated cell. Then from that cell an identical organ can be developed.