What is the answer to the brain teaser ROAD?

How is diabetes spread among humans? What does it mean if pap smear results show endocervical and or squamous metaplastic cells are present? How do the human digestive system works? How did influenza get its name? How do cancers get their names? Which type of brain diagnostic tool is best for detecting enlarged fluid-filled regions in patients with schizophrenia? What is it call when someone stops eating a certain type of food because they gets sick? Does a bleeding ulcer cause uncontrollable urinating? What term refers to enlarged heart? Why digestive system is important? What does it mean when portal vein is prominent? How does triple x syndrome occur? What is fear of being fat called? What prevent blood from flowing backward in blood vessels? What is the fear of things going to well? What is the name of the feature that you use to make your work look neat by aligning it to the right left centre or fully? An organism which the two genes for a given trait different? Does AF cause cardiomegaly? What was the theme of the movie Braveheart? What is filling after the second heart sound?