[Solved] Which of the following statements is TRUE regarding stuttering? A)It affects girls more frequently than boys. B)It is more likely to occur in preschool than in adolescence. C)It is not classified as a speech impairment. D)The causes are well known,but treatments are not. Contaminated Surface: A surface that has been exposed to potentially harmful microorganisms or chemicals, posing a risk of infection or injury. Isopropyl Alcohol: A colorless, flammable chemical compound with a strong odor, commonly used as a disinfectant, solvent, and antiseptic. Specimen Slide: A thin slice of material, such as tissue, mounted on a slide for examination under a microscope. Microscope: An instrument used to view objects that are too small to be seen by the naked eye, magnifying tiny details for study or observation.