Which excerpt from a concluding paragraph about plastic bags is written in a formal tone?

Like I said plastic bags are terrible and absolutely shouldn’t be used by anyone
Plastic bags should seriously be banned from all stores across the United States
Americans use 100 bullí y plastic bags each year. We must step up our game and stop using so many single-use plastic bags.
Bringing reusable bags to the grocery store is one way the average citizen can help reduce the use of plastic bags.

Bringing reusable bags to the grocery store is one way the average citizen can help reduce the use of plastic bags.