Which sentences supports the students argument concerning the school lunch policy

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

If the author's last name is mentioned in the sentence, it does not need to be included in the in-text citation.

10. what is the purpose of the introduction in an essay? a. to establish the main idea of the essay. b. to focus on current statistics c. to explain the main idea to the reader d. to highlight the most important concepts