What happens to body tissue at a current of 700-2000 mA?

At a current of 700-2000 mA, tissue and organs typically experience thermal damage that can lead to burns. This high level of current causes significant resistance in body tissues, resulting in the generation of heat. The thermal effects can cause protein denaturation, cellular breakdown, and necrosis of tissue. This level of current is well beyond what is necessary for causing pain or muscle contractions and can severely damage tissues and organs, leading to burns.

In this context, it’s important to understand that while some currents may lead to muscle contractions or impact bodily functions, at the specified range, the predominant effect is thermal injury, hence the correct choice emphasizes the burning of tissue and organs.