Final answer:
The statement in the question is true. Research with prisoners must enhance the voluntariness of their consent and minimize the influence of other people with arbitrary authority. Subject selection must be fair within the eligible population.
Step-by-step explanation:
The statement in the question is true. When conducting research with prisoners, it is necessary to enhance the voluntariness of their consent and minimize the influence of other people with arbitrary authority, such as staff or other prisoners. This is because prisoners are already vulnerable due to their incarceration. Researchers must ensure that subject selection is fair within the population that meets the study criteria.