1. A characteristic of __________ is that only an object's methods are able to directly access and make changes to an object's data.

		a)Classes
		b)Procedures
		c)Data hiding
		d)Component reusability

2. When an argument is passed to a method __________.

		a)its value is copied into the method's parameter variable
		b)its value may be changed within the called method
		c)Both (a) and (b) are correct.
		d)Neither (a) nor (b) are correct.