Final answer:
The correct symptoms that an ADHD client will manifest are poor concentration, decreased attention, and impulsiveness. ADHD is characterized by difficulty maintaining attention and controlling impulses beyond typical developmental stages.
Step-by-step explanation:
Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder characterized by symptoms such as poor concentration, executive functioning difficulties, impulsiveness, and hyperactivity. These symptoms are more severe than what is typically observed at a given developmental stage. Clients diagnosed with ADHD may also have comorbid conditions, like depression or obsessive-compulsive disorder (OCD), and some might exhibit a subtype known as attention deficit disorder (ADD), which lacks the hyperactivity aspect.
The correct answer to the question is: A. Poor concentration, decreased attention, and impulsiveness. These are classic signs of ADHD, distinguishing it from other behaviors such as destructiveness or somatic complaints.