Read the following introductory paragraph from an argument project: (1) The federal government should require food companies to inform consumers if their products contain GMOs. (2) Currently, states are allowed to vote on whether to make these requirements of companies. (3) The companies argue that the cost of creating such labels is prohibitive, but the fact of the matter is that scientists have not yet proven that genetically modified organisms are safe for human consumption. (4) Keeping the public safe and healthy is more important than the food companies' bottom lines. Sentence 4 serves which role in the argument? It states one of the argument's assumptions. It acknowledges an opposing argument. It directly supports the main claim. It summarizes the main claim