Which piece of evidence best supports this claim?

Banning the use of trans fats in restaurants has improved the general health of city residents.
Select one:

1. A recent poll showed that 90 percent of the local medical community supported the ban, but only 45 percent of residents supported it.

2. Since the ban was enforced, city hospitals experienced a 6 percent drop in cases of heart attack and stroke.

3. Trans fats typically account for less than 10 percent of the total fat grams in a food serving, but they can do major damage to arteries.

4. Before the ban, nearly 40 percent of local restaurants used trans fats in their food.
PLS ANSWER I NEED THIS ASAP