Please answer the following question: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Oklahoma City and the surrounding metropolitan area are home to a number of health care facilities and specialty hospitals. In Oklahoma City's MidTown district near downtown resides the state's oldest and largest single site hospital, St. Anthony Hospital and Physicians Medical Center."?
Answer:
What is the name of the biggest button and most used on iOS devices such as a iPhone?