Final answer:
Tertiary prevention programs for drug abuse treatment are usually designed for adults.
Step-by-step explanation:
Tertiary prevention programs for drug abuse treatment are usually designed for adults. Tertiary prevention focuses on providing treatment and support to those who already have a drug abuse problem, with the aim of preventing further complications or relapse. These programs may include therapy, counseling, medication, and other interventions tailored to the specific needs of adults struggling with drug abuse.