When an individual does not know how to brush or floss her teeth, what type of obstacle is she demonstrating?

The individual in this scenario is demonstrating an information obstacle. This type of obstacle arises when a person lacks the knowledge or skills required to perform a specific task. In this case, not knowing how to brush or floss teeth indicates a gap in understanding or awareness about proper dental hygiene practices.

Addressing an information obstacle typically involves providing education, instructions, or resources to help the individual gain the knowledge needed to perform the task correctly. This could include teaching techniques for brushing and flossing, explaining the importance of these habits for oral health, or showing the individual how to use dental tools effectively. By filling this gap in knowledge, the person can overcome the obstacle and improve their ability to maintain good dental hygiene.