This image contains a sample tree of data nodes. The nodes are as follows:

• At the root (level 1), there are three nodes, Home, Help, and Preferences.

• At level 2, there are two nodes under Home, viz. Benefits and Employee Data.

• At level 3, there are two nodes under Benefits, viz. Insurance and Paid Time Off. There are two nodes under Employee Data, viz. View Employee, Add New Employee.

• At level 4, there are two nodes under Insurance, viz. Health and Dental. There are two nodes under Paid Time Off viz. Vacation and Sick.