Answer: arc
Step-by-step explanation:
In the given picture, it can be seen that the shape of pizza is circle.
Thus the boundary of pizza is can be call as circumference of pizza.
Now, curve AB is a part of the circumference of pizza which is in shape of a circle.
Since we know that an arc is a curve which is a part of the circumference of a circle.
Therefore, the curve AB represents "arc".
