The cause of transplant failure is most often a) internal bleeding b) infection c) rejection d) loss of blood supply

Rejection by transplant recipient's immune system of the transplanted organ is one of the major cause of transplant failure.

Explanation:

Our body's immune system act as a defense system to defend our body from any disease or infection. Immune system kills the foreign body that enters into our body to make us sick. When an organ transplantation occurs sometimes the body's immune system considers the newly transplanted organ as a foreign body and started eating it, thus causing the transplant to fail.

i think that the answer is c

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them