The prefix "dys-" is commonly used to indicate something that is hard, difficult, or bad. It is often used to describe conditions or disorders that are abnormal or problematic. For example, "dysfunction" refers to a state of impaired or abnormal functioning, while "dyslexia" is a learning disorder that affects reading and writing abilities. Therefore, the correct answer is "hard, difficult, bad" because these words align with the meaning commonly associated with the prefix "dys-".