Which environmental policy must consider the expensive startup costs associated with building machines that harvest energy from clean sources?

reducing air pollution
regulating deforestation
introducing new farming methods
protecting ocean reefs

protecting ocean reefs

Explanation:

Ocean reefs are marine life.

Oceans are among clean sources of energy harvesting, therefore considering this policy shall ensure they comply with it before investment.

This policy shall make sure they do not lose their invested capital there after.

The other choices are environmental policies of different spheres of the environment  other than clean sources.

is D

Explanation:

the index of refraction of the second medium is higher. i just took the test trust me !