Answer:
1. Wages of assembly line workers - Product cost - Direct labor - Prime and conversion
2. Wages of the office receptionist - Period cost
3. Property taxes on the factory - Product cost - Manufacturing overhead - Conversion
4. Sugar and flour used to make cookies - Product cost - Direct materials - Prime
5. Salary of the factory maintenance supervisor - Product cost - Manufacturing overhead - Conversion
6. Salary of the sales manager - Period cost