Which option best defines the purpose of using flares under SCOF Level 2?

The primary purpose of using flares under SCOF Level 2 is to signal distress. Flares are specifically designed to attract attention in emergency situations, indicating that assistance is needed. When launched, they produce bright light and colors that can be seen from considerable distances, making them an important tool for mariners to communicate their critical situation to nearby vessels or aircraft.

While flares can have other uses, such as illuminating an area at night or possibly serving as a deterrent through their visual impact, their fundamental role in maritime safety and emergency response is to signal distress. Other methods like verbal commands or signaling in a non-emergency context do not align with the primary functional purpose of flares in life-threatening scenarios.