When assessing energy resources, it is helpful to use a measure called EROI, which is: a) energy returned minus energy invested
b) energy returned plus energy invested
c) amount of energy invested minus heat released into the environment
d) money invested in extraction and processing minus money in sales
e) energy returned divided by energy invested

e) energy returned divided by energy invested.

Explanation:

When assessing energy resources, it is helpful to use a measure called Energy Returned On Investment (EROI), which is energy returned divided by energy invested.

Energy Returned On Investment (EROI) is a means of measuring the quality of an energy source.

Generally, EROI can be defined as the ratio of the quantity of usable energy (exergy) gotten from a specific energy resource to the quantity of energy used to produce that energy resource.

Some examples of energy resources are fossil fuel, solar, hydropower, wind, nuclear, tidal, hydrogen, wave etc.

answer; ///(d) stand out from all of the others;

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;