> Negative option offers come in a variety of forms, but all share a central feature: each contain a term or condition that allows a seller to interpret a customer's silence, or failure to take an affirmative action, as acceptance of an offer. Before describing the proposed amendments, it is helpful to review the various forms such an offer can take. Negative option marketing generally falls into four categories: prenotification plans, continuity plans, automatic renewals, and free trial (i.e., free-to-pay or nominal-fee-to-pay) conversion offers.
So the "negative option" seems to be referring either to silence-is-consent or an-explicit-no-option, and this rule is around how sellers present (or don't present) such ideas.
