30. The government scandal _____ the reputations of everyone involved. (A) benefited (B) tainted (C) appeased (D) revitalized **II. Grammar: Choose the best answer.**

32. Marine biologists use jellyfish, coral, and sea anemones to study bioluminescence, _____. (A) certain living organisms give off the heatless light (B) which certain living organisms give off the heatless light (C) is the heatless light given off by certain living organisms (D) the heatless light given off by living organisms