When baking, the rods in an oven heat up and turn red. This is an example of A. an object emitting radiation as its temperature is above 0°C.
B. an object emitting conduction as its temperature is above 0°C.
C. an object emitting radiation as its thermal boundary layer is above 0°C.
D. an object emitting conduction as its thermal boundary layer is above 0°C.
a
b
A
B
с
D
d

The most correct option is A

Explanation:

The correct option is A because all objects emit thermal radiation when there temperature is higher than absolute zero - this is based on the Stefan-Boltzmann law. Hence, when the rods in an oven heat up above absolute zero, they begin to start emitting radiation. It should noted at this point that objects do not "emit" conduction and thus all options that involved "emitting conduction" are subsequently wrong.