Which of the following scenarios could potentially qualify as sexual assault?

The scenario that qualifies as sexual assault is one where physical sexual contact occurs without consent. Consent is a fundamental aspect of any sexual encounter; if it is not obtained, the act can be classified as sexual assault. This scenario emphasizes the importance of verbal or non-verbal agreement between parties regarding any sexual activity. Without consent, any physical sexual contact can lead to serious legal repercussions and is considered a violation of an individual's autonomy and rights.

In contrast, the other scenarios presented do not meet the legal criteria for sexual assault. Mutual agreement to sexual activities implies consent, and thus does not qualify as assault. Similarly, sexual flirting, while potentially inappropriate depending on the context, does not necessarily imply physical contact or lack of consent. Lastly, engaging in sexual activities within a marriage typically assumes consent due to the established mutual agreement inherent in marital relationships, unless there are specific circumstances that would imply otherwise.