Alcohol advertising often tells people that drinking less alcohol is fine, and controlling the amount of alcohol consumed may also be good for the heart. Which of the following, if true, would most weaken the conclusion? ['The optimal amount of alcohol for each person is different, which depends on factors such as personal age, gender, and folic acid intake.', 'Alcohol may be beneficial for those with low HDL, a healthy diet and plenty of exercises.', 'Survey Shows 80% of Alcohol Advertising Recognizes Over Beautification and Exaggerates the Benefits of Drinking.', 'Limited content of beneficial ingredients such as resveratrol and antioxidants in red wine.']