A tourist, sitting by the fire, boils water in a pot, which hangs high above the fire. Which type of heat transfer is most significant in heat transfer

A tourist, sitting by the fire, boils water in a pot, which hangs high above the fire. Which type of heat transfer is most significant in heat transfer:
a) from the flame of the fire to the pot;
b) from the pot to water;
c) from a fire to a person;
d) when heating water in a pot?

A) convection
B) thermal conductivity
С) radiation
D) convection from the fire to the pot and heat conduction from the pot to the water