Unsolicited bulk emails, the equivalent of junk mail and flyers, are called:

The correct answer is B. spam.

Spam refers to unsolicited bulk emails that are sent to a large number of recipients. These emails are typically irrelevant or inappropriate messages, often related to advertising. Just like junk mail, spam can clutter inboxes and is usually unwanted by the recipients. If you have any more questions or need further assistance, feel free to ask!