Recent investigations indicate that the health hazard of the mercury found in fish that are consumed by humans is not limited to nerve damage. In an European study, 400 middle aged men who had mercury contamination were tested for the amount of mercury in their bodies by analyzing their toenails clippings. Several hundred men who had had heart attacks were compared to an equal number who had not. It was found that the heart attack survivors had more mercury in their body tissues than the others, the control group. The implication of the scientific study is that mercury in the body predisposes humans to disease of the heart.
In what ways is the last sentence of the paragraph a well-written concluding statement?
A) The final sentence is objective, unscientific, yet brings closure to the evidence presented in the paragraph.
B) The final sentence is unified, clearly written, and brings closure to the evidence presented in the paragraph.
C) The final sentence is unified, clearly written, and provides evidence that mercury does not cause nerve damage.
D) The final sentence is positive, aggressively stated, and brings closure to the evidence presented in the paragraph.