Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the Lymph vessels, Muscles, Arteries, or Veins?

Intravenous route is the fastest route for the distribution of a drug to its site of action. The advantages of intravenous injection are that the response is very rapid, the dosage of the drug can be easily controlled and veins are insensitive to irritation by irritant drugs at higher concentrations. So, the correct answer is option D.