Which of the following is a tip for using a compass effectively?

Using a compass effectively is crucial for navigation while scuba diving, particularly in challenging environments where visual landmarks are not available. Sharing responsibilities refers to the practice of having one diver navigate while the other focuses on monitoring the dive profile and safety, which can enhance the overall effectiveness of navigation. By sharing this responsibility, both divers can work together to ensure that the navigation is accurate and that they remain aware of their surroundings, contributing to a safer dive experience.

The other options address common misconceptions or practices that are not advisable when using a compass underwater. Ignoring current can lead to miscalculations in your navigation; currents can significantly alter your intended path, so it's essential to account for them. Descending and ascending quickly is not a safe practice, as it can lead to serious hazards such as barotrauma or decompression sickness. Lastly, always going against the current might seem intuitive but can lead to exhaustion and unsafe conditions, especially during a dive. Hence, the practice of sharing responsibilities offers a collaborative approach that reinforces safety while navigating with a compass.