Part of macOS
universalaccessdAccessibility
○ Leave it
Runs accessibility features such as Zoom and display settings.
What it is
Looks after Accessibility settings while you use the Mac.
If you stop it
macOS starts it again straight away. Leave it.
The verdict
○ Leave it. Part of macOS, or something that starts again by itself. You never need to close these.
In Activity Monitor
universalaccessd
From Procession’s guide, in the words the app shows.