Question

the heat flowing from the metal rod to the persons hand
radiation
convection
conduction

Explanation:

• Radiation: Transfer of heat in the form of electromagnetic waves (e.g., heat from the sun). No medium required. Not applicable here as the heat is through direct contact.
• Convection: Transfer of heat through the movement of fluids (liquids or gases). Not relevant as there is no fluid - based movement shown.
• Conduction: Transfer of heat through direct contact between materials (or molecules). The metal rod (solid) is in direct contact with the hand, so heat transfer occurs via conduction.

Answer:

conduction