What is the notation for the complement of set A?

The complement of a set A consists of all elements in the universal set that are not in A. The notation used to represent the complement of set A can vary depending on the context or textbook, but all the options provided are widely accepted representations.

The notation A' is commonly used in various mathematical writings and is derived from set theory to indicate the complement. It signifies all elements that are outside of set A.

Aᴄ is another standard notation for the complement. This notation is similar to A' and is often used in formal set theories and certain mathematical texts.

A∁, while less common than the previous two, is still recognized in some mathematical circles to denote the complement of set A.

Given that all three notations are valid representations for the complement of a set, this results in the conclusion that all of the provided options represent the same concept: the complement of set A, thus making the choice correct.