Question

conductors are materials that...
allow heat to pass through
allow cold to pass through
stop cold from passing through
stop heat from passing through

Explanation:

Conductors are materials that allow heat to pass through easily. This is a fundamental property in physics related to thermal conductivity. Cold is not a substance that "passes through" in the same sense as heat (which is energy transfer). Materials that stop heat are insulators.

Answer:

A. Allow heat to pass through