The correct answer to this open question is the following.
Although there not options provided, we can say the following.
When the frequency of a time-filling behavior increases as a side effect of other behaviors maintained by a schedule for reinforcement (also known as schedule-induced behavior), this is described as adjunctive behaviors.
If we are talking about psychological terms, adjunctive behavior is the kind of behavior that is repeated but depends on another conditioned behavior that is controlled. They can be inducive by constant delivery of incentives to create a response, although the behavior is not reinforced by the incentive.