The most common form of abuse of an elderly person by a caregiver or fiduciary is:

The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

The most common form of abuse of an elderly person by a caregiver or fiduciary is financial abuse.

This is considered abuse for the elderly. Abuse is not limited to physical abuse or mental abuse. Financial abuse is so cruel because the caregiver or fiduciary can deprive the elderly to get their money so needed in that age. The worst part of it is that often times, this abuse comes from family members such as sons or daughters or friends.

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