1. A delicious luncheon meat.
2. Unwanted and unsolicited e-mail usually used to market a product or service.
3. Both.

The correct answer is C.

E-mail Filters

Some ISPs provide filters so that you won’t receive spam. These filters are set up to recognize who sends e-mail to you and discard mail from people you don’t know. Also some e-mail software, such as Outlook, lets you set up filters, to scan for common spam phrases such as "limited time offer" or "XXX" or "earn free $$."