In a cooking context, which of the following materials is the best heat conductor?

A. Gas

B. Glass

C. Any dense liquid

D. Iron

Correct answer is D, Iron.

In a cooking competition, Iron is the best heat conductor.

Heat conductors are materials that conducts electricity well. All material that conduct electricity are conductors and all materials that resist electricity are insulators. Gas, Glass, Dense liquid are not heat conductors. Iron is the material that can conduct electricity, thus it is the best heat conductor among all the options.

Iron is the answer to the question