___________________________________ is/are a disability in which children consistently show one or more of the following characteristics over a period of time: inattention,hyperactivity,and impulsivity.

A) Dyslexia
B) Down syndrome
C) Attention deficit hyperactivity disorder (ADHD)
D) Both dyslexia and ADHD

Attention Deficit Hyperactivity Disorder (ADHD)

A disability in which children consistently show one or more of the following characteristics: (1) inattention, (2) hyperactivity, and (3) impulsivity.

Hyperactivity

An elevated level of activity that may impair daily functioning, often associated with attention-deficit/hyperactivity disorder (ADHD).

Inattention

The lack of focus or concentration on a task or the environment, which can interfere with the ability to process information effectively.