The category of behavior that Mrs.Brown is describing is immediacy.
Explanation
Immediacy is a way of communication that indicates comfort, closeness and willingness to communicate or connect with the receiver of the message. For example, in this case, immediacy is represented in Mrs.Brown behavior when she says she looks at the clients, hold their hands and sits next to them which makes them feel emotionally closer and safe with her.
The federal system was the most important to the founding fathers
Https://link.springer.com/chapter/10.1007/978-94-011-2010-4_141
answer is in attachments, Have a look.
Removal powers, Ratification powers, Implied powers, Expressed powers and Enumerated powers.