You respond to the scene of a wrecked tanker truck. you note fluid leaking out of the tank onto the ground. which source of information should you try to find to you determine what material was being transported and what your immediate actions should​ be? a. an nfpa 704 placardb. emergency response guidebookc. a u. s. dot placardd. material safety data sheets

D. Material safety data sheet

Explanation:

It is supposed that all the chemical substances when they are transported, the driver, need to have with him this sheet.

In this sheet it comes all the necessary information about the physical and chemical properties of the substance. Also it toxicity, what to do in case of a spill, how to remove it, etc.

This is the main source to content a unkown liquid.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).