What is one bioethical concern with using embryonic stem cells for regenerative medicine? a. stem cells must always be provided by a donor who is financially compensated. b. stem-cell therapy does not have a long history of research and development. c. stem-cell therapy results in greater rejection rates than traditional organ transplants. d. stem-cell therapy is more invasive than traditional organ transplants.

The right answer is A

Bioethics is the study of moral issues raised by biological, medical or genetic research and some of its applications. like the research on embryonary stem cells.
The loss of income for people who donate stem cells must be compensated.

The use of human stem cells, for clinical or scientific purposes, is governed by a set of legislative and regulatory texts mentioned in the public health code in different countries.
With the exception of hematopoietic stem cells, stem cells are mainly used in biomedical research protocols. This research is governed by all the provisions covering the use of elements and products of the human body for medical or scientific purposes.