Two broad categories within the human services industry include human services professionals, who have direct contact with clients, and who have little or no contact with clients.

True.

Explanation:

The human services industry is highly necessary in our modern world, being the main, and often the only, source of solving problems that promote great welfare and benefits to citizens.

This industry has many categories, two of which are:

Front lines: represented by professionals who have direct contact with customers.

Front desk: Represented by professionals who have little or no direct contact with the customer.