Question

when substances bioaccumulate in a living organism, in what part of the body are they most likely to build up to dangerous levels? brain heart liver skin

Explanation:

The liver is a major organ involved in detoxification. When substances bioaccumulate (build - up of substances in an organism), the liver processes many of these substances. If the rate of intake of a harmful substance exceeds the liver's ability to metabolize or excrete it, the substance can build up to dangerous levels in the liver. The brain (A) has a blood - brain barrier that limits the entry of many substances. The heart (B) is more focused on circulation. The skin (D) is a barrier organ but not the primary site for the dangerous build - up of bioaccumulated substances compared to the liver.

Answer:

C. liver