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

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

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