Activities that involve the production or purchase of merchandise and the sale of goods and services to customers, including expenditures related to administering the business, are classified as:

Operating activities

Explanation:

The operating activities deal with the purchase and sale of merchandise to the customers plus it also involves the expenditure incurred for day to day operations like - wages and salaries expenses, administrative expenses, selling and other general expenses

By performing day to day activities, the company is enabled to generate the revenues through which the company could accomplish its goals and objectives.