Under what condition can you legally drive with a permit in Michigan?

In Michigan, the law stipulates that a person holding a driving permit must be accompanied by a licensed adult driver who is at least 21 years old. This requirement is in place to ensure that novice drivers are monitored and guided by a responsible adult who can provide immediate assistance and instruction, thereby enhancing safety for both the learner and others on the road.

The other scenarios presented are not permissible under Michigan's permit regulations. Driving alone is not allowed since the permit is meant for learning while under supervision. Driving after sunset without supervision is also prohibited, as it could enhance the risk due to reduced visibility for inexperienced drivers. Finally, while taking a driving test one can drive under specific conditions, this situation typically requires either a licensed instructor or an authorized examiner, which does not align with the conditions of holding a permit for general driving. Thus, the correct answer is that driving with a permit is legal only when accompanied by a licensed adult driver aged 21 or older.