which event may occur when ocean salinity increases?\no mass of water increases\no freezing point of water…

Brief Explanations:

When ocean salinity increases, the freezing - point of water decreases due to the presence of dissolved salts which act as solutes and depress the freezing point. The mass of water is not directly affected by salinity changes. Sunlight penetration is mainly related to water clarity and depth, not salinity. The amount of dissolved gases in water is more related to temperature, pressure, and biological activity rather than salinity.

Answer:

None of the above options are correct. However, if we consider the closest incorrect - option analysis, the statement about the freezing point is the most relevant in terms of a common misconception related to salinity effects. If we had to choose from the given options, the freezing point of water actually decreases with increasing salinity, so the statement "freezing point of water increases" is incorrect but the most relevant among the options in terms of the concept of salinity effects on water properties.