Final answer:
Bilingual individuals, like Jan, may experience cognitive advantages such as enhanced inhibitory control and task switching abilities, which are likely results of the mental flexibility required to manage and switch between two languages.
Step-by-step explanation:
Jan thinks she has a cognitive advantage because she is bilingual. The cognitive advantage that is associated with bilingualism includes inhibitory control and task switching. Inhibitory control refers to the ability to override a strong internal or external pull to appropriately act within the demands of the environment, a skill that can be enhanced by managing two language systems. Task switching involves the ability to switch attention between different tasks or mental processes, which can be practiced by bilinguals as they switch between languages. Additionally, research has shown that bilingual individuals can also experience benefits in areas such as word retention and abstract reasoning. This is likely due to the continuous practice of accessing vocabulary from two different languages and the mental flexibility required to operate in dual linguistic environments.