Final answer:
The additional hours an esthetician needs to become an instructor depend on state regulations and institutional requirements, and are not standardized across different regions.
Step-by-step explanation:
The number of additional hours an esthetician needs to become an instructor varies depending on the state and institution's requirements. However, it seems that the question is providing specific options to choose from. Since regulation and required hours for licensure can change, it is important to consult the current state regulations or cosmetology board for the most accurate information. If the state requires an esthetician to complete 750 hours of training to become licensed and the question assumes a cumulative requirement for becoming an instructor, one might add the additional hours required on top of the basic esthetics training.