Induced pluripotent stem cells are cells from adults that have been reprogrammed to imitate embryonic stem cells. why might induced pluripotent stem cells be a valuaale tool in science and medicine?
a. induced pluripotent stem cells can become any cell type in the body, but are from adults, avoiding the controversies associated with
embryonic stem cells.
b. induced pluripotent stem cells are the only type of stem cell that's truly pluripotent.
c. induced pluripotent stem cells may become any cell type in the body, but are fraught with ethical questions over their use.
d. induced pluripotent stem cells are derived from adult cells and therefore may have dna abnormalities, allowing scientists to understand the
effects of sun exposure or toxins on dna.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

c is the correct answer hope this !