Which perspective would place a priority on the fact that many major environmental organizations accept funding from oil companies and chemical giants and as a result emphasize limited reform rather than profound structural change?

Conflict perspective would place a priority on the given fact.

Explanation:

In the given situation the conflict between the stated purpose of environmental organizations which usually targets search for fundamental solutions to environmental problems, and their accepted mode of operation, which lets them take donations from oil companies and chemical giants, results in the conflict. This exact entities threaten the environment and thus works against the stated purpose. And this a core conflict observed.

The organizations that for various reasons end up working against their own stated purpose can be referred to as surrogate organizations.