I would say that the given statement is false. Overexertion in extremely hot temperatures does not help the body to cool itself. <span>Overexertion in hot weather or working in hot, poorly ventilated or confined areas can increase your risk of heat stress. Hope this answers the question. </span>
The correct option is C.
The heart is part of the cardiovascular system. The heart pump the blood round the body several times in a day. The blood is made up of several types of cells which carry out specific function in the body, these include the white blood cells which serves as soldiers of the body. The lymph refers to the fluid that circulate throughout the lymphatic system. Both the blood and the lymph are carried round the body by the cardiovascular system during the process of circulation.<span />
