What must mariners be cautious of when responding to distress signals?

When mariners respond to distress signals, it is crucial for them to avoid putting themselves in danger while assisting those in need. This principle is grounded in maritime safety practices. Mariners must assess the situation carefully, taking into account the weather, sea conditions, and their own vessel's capabilities, as well as the safety of their crew and passengers.

Responding to a distress signal can be noble and essential, but if the rescuers put themselves at risk, they may require assistance themselves, complicating the situation. Therefore, ensuring their own safety while attempting to assist those in distress is paramount. This approach not only protects the rescuers but also increases the likelihood of effective assistance to those in need.

In contrast to this choice, the other options present scenarios that could lead to dangerous outcomes. For instance, providing assistance regardless of conditions disregards safety protocols and could jeopardize lives. Ignoring signals if not close by would deny critical help to those in distress, and rushing to assist without proper planning could lead to chaotic situations that further endanger both the rescuers and the individuals requiring assistance.