The statement 'But those in power still do not believe that.' best supports the inference of Diane Rodriguez's ongoing frustration about being denied opportunities.
The best statement supporting the inference that Diane Rodriguez is still frustrated about being denied opportunities is: 'But those in power still do not believe that.' (paragraph 8)
This statement implies ongoing frustration due to continued denial of opportunities by those in authority.
It indicates a persistence of obstacles she faces in accessing opportunities, contributing to her continued frustration.
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