Final answer:
In an organization, employees are expected to use email professionally, including having an electronic signature, understanding file extensions, and knowing domain names. Sending unsolicited emails is typically not permitted. Therefore the given options are correct.
Step-by-step explanation:
In dealing with e-mail within an organization, there are several expectations regarding professionalism and appropriate use. First and foremost, having an electronic signature is often required as it adds a level of authenticity and provides necessary contact information. Understanding file extensions is also important to ensure that the attachments you send can be opened by the recipient and that you recognize safe file types when receiving emails. Knowing what a domain name is can help you identify the source of emails and assess their credibility. It is typically against company policies to send unsolicited emails, often referred to as spam, as they can harm the organization's reputation and may violate laws or regulations.