What have scientists done to protect the Great Barrier Reef?

What have scientists done to protect the Great Barrier Reef?

A.THEY HAVE SET UP AN ORGANIZATION TO PROTECT THE REEF.

B.THEY HAVE TAKEN SOME LEGAL MEASURES TO PROTECT THE REEF.

C.THEY PLAYED A PART IN PERSUADING THE GOVERNMENT INTO TAKING STEPS OF PROTECTION.

D.THEY STUDIED THE REEF AND TOLD PEOPLE OF THE IMPORTANCE OF PROTECTING IT.

正确答案是C