Read closely the ACT Writing Prep excerpt. Which sentence should be deleted because it repeats an established point, interrupts the progression, or does not contribute to the argument? [1] A paragraph on cafeteria composting should not drift into a general celebration of environmental awareness. [2] It should explain how sorting food scraps would reduce the amount of waste sent to landfills. [3] Then it can address how students would learn the sorting routine. [4] Environmental awareness is important because people should be aware of the environment.