Which of the following is an example of informal communication?

Informal communication refers to the spontaneous and casual exchange of information that occurs outside of established formal channels. It often happens through face-to-face interactions and can include casual conversations among colleagues or managers.

In this context, managers walking around exemplifies informal communication as it involves direct interaction with staff, fostering an environment where employees may feel more comfortable sharing thoughts, ideas, or concerns in a less structured setting. This type of communication helps build relationships and encourages open dialogue, which can be beneficial for team dynamics and overall workplace culture.

In contrast, the other options are formal communication methods. An annual report is a structured document that typically presents a company's performance and is intended for stakeholders. A company newsletter is a more formal method of disseminating information and updates within an organization. Similarly, a customer satisfaction survey is a structured approach to gathering feedback in a formalized manner, often used for analysis rather than spontaneous conversation.