I believe the answer is: A just-noticeable difference
In painting, A just-noticeable difference refers to the amount of things that needed to be change for a difference to be noticeable.
The threshold usually depended on the type of audience that being aimed toward, (for common audience, the threshold of differences would be relatively higher compared to expert audience)<span />
Membership in the Islamic community known as the Umma was based on a common faith. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.