What condition would best classify behaviors such as trouble staying on task and easily distracted?

The condition that best classifies behaviors such as trouble staying on task and easily distracted is Attention-Deficit/Hyperactivity Disorder (ADHD). This disorder is characterized by symptoms that include inattention, hyperactivity, and impulsiveness. Individuals with ADHD often find it challenging to maintain focus on tasks, follow through on assignments, and may frequently become sidetracked by extraneous stimuli. This aligns well with the behaviors mentioned, as someone with ADHD may struggle to organize tasks or may have a tendency to be easily distracted by their surroundings.

The other options relate to different sets of symptoms and challenges. General Anxiety Disorder primarily involves excessive worry and anxiety, which can affect focus, but it does not specifically center on attention and distraction in the way ADHD does. Autism Spectrum Disorder includes a wide range of challenges, such as difficulties with social communication and restricted interests, but staying on task and distractibility are more closely associated with ADHD. Learning disabilities typically refer to specific difficulties in acquiring academic skills, such as reading or math, rather than generalized difficulties with attention. Thus, ADHD is the most relevant classification for the behaviors described in the question.