Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the

Step-by-step solution

Intravenous therapy or IV therapy is providing the liquid substances (or medicine) through drip, directly into the vein. The word intravenous simply means 'within a vein'. Compared with other routes of administration, the intravenous root is the fastest way to deliver fluids and medications throughout the body. Some medications, as well as blood transfusions and lethal injections, can only be given intravenously.