Methods are used to define an object's behavior. true false

True

Explanation:

 Yes, the given statement is true that the methods are use to define an object behavior. As, methods are basically a procedure which are associated with the an object, where an object are the combination of functions and variable.

An object is basically consist of behavior and data in which the data are used to represent the properties of an object and the behavior are used to represent the methods of an object.

Methods maintain the interface for modifying the properties of data in an object.