1. A group of prison inmates is identified for a study on mental health. Their participation is voluntary. This is acceptable.

The correct answer is: True

Prisoners are asked to bear the risks of a study, but their participation is voluntary.

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2. Upper socioeconomic people are identified to be in a study because they have better access to transportation that will get them to the study location. This is just.

The correct answer is: False

These participants are being selected because of their availability, and this is unjust.