Relaxing is the option that may help prevent and treat heart disease. This answer is found in the first sentence of the passage\u2019s second paragraph. The passage informs the reader that smokers should quit smoking; therefore, smoking would not help prevent and treat heart disease. The passage informs the reader that drinking in moderation could reduce the risk of heart disease, but it does not imply that it will treat heart disease. Yawning is not mentioned in the passage, so it can be eliminated.