What type of disorder encompasses a range of impaired communication abilities?

The correct choice is B, as neurodevelopmental disorders include conditions that affect the development of the nervous system, leading to atypical functioning in various domains, including communication. These disorders often manifest in childhood and can impede skills such as speaking, understanding language, and engaging in social interactions.

Examples of neurodevelopmental disorders encompassing impaired communication abilities include Autism Spectrum Disorder and Language Disorder. These conditions can significantly impact an individual's capacity to communicate effectively and interact socially, which is a core aspect of their development.

Other categories like psychotic disorders primarily involve symptoms such as delusions or hallucinations that affect perception of reality, personality disorders focus on enduring patterns of behavior and inner experience that deviate from cultural expectations, and substance-related disorders are concerned with the effects of substances on behavior and mental functioning, but do not primarily address communication impairments. Thus, neurodevelopmental disorders are the most fitting classification for a range of impaired communication abilities.