Final answer:
The correct answer is option a: The tendency for many older adults to falsely claim they are being abused.
Step-by-step explanation:
Among the listed options, the correct answer is option a: The tendency for many older adults to falsely claim they are being abused. This is not a barrier to detecting elder mistreatment. In fact, elder mistreatment is often underreported and the number of cases may be higher than reported (Kohn and Verhoek-Oftedahl 2011).