The three examples of heat transfer via conduction from your list are:
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Burning your legs on a hot car seat (assume the car's interior is black, it is parked in the sun, and that you are wearing shorts.) - In this scenario, heat is transferred from the hot car seat to your legs through direct contact.
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Heat lamp at McDonald's over the fries - While this scenario also involves radiation, the heat lamp heats the surface of the fries (in contact with the heat), which promotes conduction as the heat transfers to the fries.
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Melting crayons with a hot iron - Here, the heat from the hot iron transfers directly to the crayons through contact, causing them to melt.
The other options you provided involve heat transfer through radiation or convection rather than conduction.