The chain of command is an unbroken line of authority that extends from the top of the organization to the lowest echelon and clarifies who reports to whom. the principle of preserve the concept of an unbroken line of authority.

Unity of command principle

Explanation:

 The chain of command is basically defined as the command which is unbroken line of the authority and extends the level of the organization from top to lowest level echelon. It basically clarifies the individual report.

The unit of command is the principle that helps to preserve the main concept of the line of authority in an organization.

Most of the organization finds very effective way of command. The unit of command basically help to preserve this chain of command authority and also preserve it from the various structural characteristic of matrix as it break the unit of command.

answer; i believe the correct answer is (psychological pricing);

it is much more convenient for the consumer to order something online, rather than going to a store. it saves them time and money for them, especially if that item is not accessed easily.