The correct answer is option B Physiological
The herbivores have field of view of 180 degree from each eye which means they can have the vision of things with in the 180 degree angle of cone of vision which is purely a physio optical concept and thus this is a kind of physiological behavior . These herbivores can see an object with only one eye.
Pigments absorb light and convert it to chlorophyll molecules, each has a set of wavelengths called absorption spectrum<span />
1. Reduced production of waste materials
2. Increased reuse of older materials
3. Use more renewable sources of energy
4. Decrease the rate of fires through alternate means of warmth
5. Burn down less forests and find better means of farming