Question

the seafoam island council wants to test whether the two proposed solutions, a no-anchor zone and mooring buoys, meet the seafoam reef conservancy’s requirement: seafoam reef’s percent coral cover should return to 90% within 30 years. so, the council must determine how much undamaged coral the reef would have in 30 years under each solution. to get this information, the council asks the scientists of seafoam island to develop a model that makes projections about seafoam reef’s future. a projection is an informed estimate. the scientists can use data and information about many environmental factors to make projections. which of the following projections should the model make? select the two most helpful projections for testing the seafoam reef conservancy’s requirement. the percentage of the reef covered in undamaged coral in 40 years if no action is taken the percentage of the reef covered in undamaged coral in 30 years if the no-anchor zone is used the percentage of the reef covered in undamaged coral in 30 years if the mooring buoys are used the percentage of the reef covered in any coral in 20 years if the mooring buoys are used

Explanation:

To test if the two solutions (no - anchor zone, mooring buoys) meet the requirement (90% coral cover in 30 years), we need projections of undamaged coral in 30 years for each solution.

• "the percentage of the reef covered in undamaged coral in 30 years if the no - anchor zone is used" gives data for one solution in 30 years.
• "the percentage of the reef covered in undamaged coral in 30 years if the mooring buoys are used" gives data for the other solution in 30 years.

The projection of no action in 40 years is not directly about the two solutions in 30 years, and the 20 - year any coral projection is not about undamaged coral in 30 years for the solutions.

Answer:

B. the percentage of the reef covered in undamaged coral in 30 years if the no - anchor zone is used
C. the percentage of the reef covered in undamaged coral in 30 years if the mooring buoys are used