Which pathway directly leads to transfer of useful energy within a biological community?

The following are pathways of energy in the biosphere

I. Heat energy is lost from body metabolism to the surrounding air

II. Energy passes to decomposers and parasites

III. Energy is transferred to the next higher level in a food chain

IV. Energy is also passed by conduction to clothing and other objects

A. I only
B. II and III only
C. I and III only
D. I and II only
E. IV only

Correct Answer:

Option B – II and III only