Which one ? I need help it wont let me put too pics so ill post a part 2

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."