Final answer:
Jackson's behavior of eating more despite not being physiologically hungry indicates that incentive theories of motivation best explain his actions, as this theory suggests that external rewards can motivate behaviors.
Step-by-step explanation:
Jackson's behavior of eating donuts despite having a full breakfast is most consistent with a. incentive theories of motivation. This theory deals with motivation that arises from external stimuli or rewards, such as the allure of tasty donuts, rather than being driven solely by internal physiological needs.
Drive theories of motivation, like hunger, would not apply here as Jackson had already eaten and was not in a state of physiological need for more food. Instead, the availability of a tempting treat provided an external cue and possible social context that acted as an incentive to eat more. This emphasizes how environmental factors and psychological desires can lead to behaviors that are not necessarily linked to physiological drives or needs.