Which of the following forms of outreach is considered unsolicited contact?

Unsolicited contact refers to reaching out to individuals or groups without an invitation or prior relationship, often catching them off guard or without their consent. Door-to-door soliciting is the epitome of unsolicited contact because it involves an individual or representative physically approaching homes directly, intending to discuss a product or service without any pre-established engagement or permission from the residents.

The other forms of outreach listed, such as direct mail campaigns, company-sponsored events, and webinars, typically occur in contexts where recipients have given some form of permission or shown interest. For instance, direct mail campaigns generally target individuals who have opted into mailing lists or have shown interest in related services. Company-sponsored events and webinars often require prior registration or engagement, which indicates a level of interest from the participants, thus differentiating them from the unsolicited nature of door-to-door solicitation.