The correct response is:
Heat from the hot coffee is transferred to the ice cube through conduction.
When an ice cube is placed in hot coffee, heat transfers from the coffee (the hotter substance) to the ice cube (the cooler substance) through conduction. Conduction is the process of heat transfer through direct contact between materials. The ice cube absorbs heat, causing it to melt and cool down the coffee in the process.
The other options involving convection are incorrect in this context, as convection involves the movement of fluids and is not the primary mechanism at play when a solid ice cube interacts with a liquid like coffee.