A duration driver is A simple count of the number of items a

A duration driver is:

A simple count of the number of items an activity occurs.

An activity measure that is used for the life of the company.

A measure of the amount of time required to perform an activity.

An activity measure that is used for the life of an activity-based costing system.

	a.	A simple count of the number of items an activity occurs.
	b.	An activity measure that is used for the life of the company.
	c.	A measure of the amount of time required to perform an activity.
	d.	An activity measure that is used for the life of an activity-based costing system.

Solution:

A duration driver is \"A measure of the amount of time required to perform an activity.\"

Hence option c is correct.