The patient self determination act of 1990:
a. addresses end-of -life decisions and care related thereto.
b. provides for the use of living wills, health care proxies, and advance directives.
c. was made necessary in part by technological advances in life-support systems
d. all of the above.

I think B, but read my explanation, just in case.

I'm in going into sixth grade, but I'm almost sure that's the answer. (My mom's a doctor, so I'm interested in medicine.

Explanation:

I read a paper about it, and it doesn't really talk about a or c. All it says is basically, patients have the right to know, or cooperate in health care decisions. I read a part of it talking about advance directives and living wills. It allows them to inform patients of their rights under State law to make decisions concerning their medical care so maybe A.

explanation:

for example, code 28039 - excision, tumor, soft tissue of foot or toe, subcutaneous, 1.5 cm or greater, appears before 28043 - excision, tumor, soft tissue of foot or toe, subcutaneous; less than 1.5 cm.

answer:

it could come from a variety of sources.

explanation:

..although it was most likely developed through zoonotic transmission, where an infectious disease which usually afflicts when animals jump to humans.