What impact can surface disturbances have on a dive?

Surface disturbances can significantly impact diving operations, particularly in terms of visibility and the conditions for entering or exiting the water. When there are disturbances such as wind, waves, or boat traffic, these factors can stir up sediments on the seabed or create ripples on the water's surface. This turmoil often results in decreased visibility for divers, as suspended particles in the water scatter light and obscure underwater sights.

Moreover, surface disturbances can complicate entry and exit from the dive site. Choppy waters can create unsafe conditions for divers when trying to enter or exit the water, increasing the risk of falls or difficult navigation. The combination of reduced visibility and challenging surface conditions can make for a more hazardous diving experience overall.

In contrast, the other options suggest that surface disturbances might improve conditions, be beneficial for entry, or be solely attributed to weather. However, the realities of diving in disturbed waters often reveal they introduce more risks rather than advantages. Thus, the assessment of C as the correct answer underscores the importance of recognizing and adapting to the complexities presented by surface disturbances when planning and conducting dives.