The metal spoon is a better thermal conductor. Hence, option B is correct.
What is a thermal conductor?
A thermal conductor is a material that allows the energy in the form of heat, to be transferred within the material, without any movement of the material itself.
Metals are good conductors. Laying on the metal handle of the metal cooking pot. It appears that the pot is sitting on top of a campfire.
Since metal is a good conductor of energy, the spoon gets hot because heat is transferred through the metal pot to its handle, and then to the metal spoon.
Hence, option B is correct.
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