Which of the following is a common type of business correspondence?

Emails are a common type of business correspondence because they are widely utilized for both internal and external communication within organizations. They provide a quick and efficient way to convey messages, share information, and engage in discussions. Emails can be used for a variety of purposes, such as sending announcements, scheduling meetings, exchanging feedback, and collaborating on projects. Their immediacy and ease of use make them an integral component of modern business communication.

While reports, proposals, and invoices are indeed important documents within a business context, they are often more specific in their function or purpose. Reports summarize data or findings, proposals outline plans or projects, and invoices facilitate billing and payment processes. In contrast, emails encompass a broader range of communication needs and are essential for day-to-day interactions in a business setting.