Question

if scientists know the mass of ice and the temperature of surrounding water, they can use computational tools to: reduce greenhouse gas emissions directly. calculate earths rotation speed. measure the salinity of the ocean. predict the amount of ice melt over time.

Explanation:

If scientists know the mass of ice and water - temperature, they can use computational tools to predict the amount of ice - melt over time. This is because ice - melt is related to temperature and the mass of ice available. Measuring salinity is unrelated to the given data, calculating Earth's rotation speed is not relevant to ice - melt based on ice mass and water temperature, and reducing greenhouse gas emissions cannot be directly done using just this information.

Answer:

Predict the amount of ice melt over time.