Question

reflection
conduction
radiation
convection
which mode of heat transfer is demonstrated in the accompanying image?

Explanation:

Conduction is the transfer of heat through direct contact. In the image, the hand holding the rod (assuming the rod is heated at one end) shows heat transfer via conduction as the heat moves along the rod through molecular collisions. Reflection is about light bouncing off a surface (not heat transfer here). Radiation is heat transfer via electromagnetic waves (no such indication). Convection involves heat transfer through fluid (liquid or gas) movement (not shown as fluid movement in the basic rod - hand setup).

Answer:

Conduction