Final answer:
Adderall, which is a combination of amphetamine and dextroamphetamine, is used for treating ADHD. Other drugs such as clozaril, lithium, and Xanax treat different conditions and are not for ADHD.
Step-by-step explanation:
The drug that can be used to treat attention deficit hyperactivity disorder (ADHD) among the options provided is 'A. Aderall'. This is likely a reference to Adderall, which is a combination of amphetamine and dextroamphetamine. Adderall is a central nervous system stimulant that is commonly prescribed to manage the symptoms of ADHD, including difficulty paying attention, difficulty controlling behavior, and hyperactivity. It is essential to note that ADHD affects not only children but also adults, and the treatment involves behavioral therapies along with prescription medications like stimulants, which have a calming effect on patients with ADHD. Other drugs mentioned, such as clozaril (clozapine), lithium, and Xanax (alprazolam), treat different psychiatric conditions like schizophrenia, bipolar disorder, and anxiety disorders, respectively, and are not specifically indicated for ADHD treatment.