<span>C is the correct answer. While a basic hand tool, such as a screwdriver, requires effort to use and you therefore expand energy while using it, it does not significantly affect your level of physical activity. Exercise, for example, would more affect your level of physical activity.</span>
Schizophrenia is a chronic mental disorder which is characterized by abnormal behavior, distorted perception of reality and disorganized thoughts and speech. Other symptoms include false beliefs, social isolation, difficulty in working, lack of motivation and reduced expression of emotions.
A person with schizophrenia generally have other mental disorders such as anxiety and depression and may experience delusions and hallucinations.