C, as Autotrophs are producers that create their own food from the sun.
Answer:Neon
Explanation:
Less amount of energy levels
The equation for the thermal efficiency of a system is given by n = Tc/Thx100
where n is the thermal efficiency, Tc is the temperature of the cold reservoir
and Th is the temperature of the hot reservoir. Dividing 190 by 515 gives us an
efficiency of 36.9%.