Aphasia is described as a difficulty with which of the following?

Aphasia is primarily characterized by difficulties with speech and language. It is often the result of brain damage, such as from a stroke or traumatic brain injury, that affects the areas of the brain responsible for communication. Individuals with aphasia may struggle with speaking, understanding spoken language, reading, and writing. Therefore, the correct answer highlights the primary impairment associated with aphasia, which is the difficulty in expressing or comprehending speech.

The other options relate to different types of disorders or impairments. For instance, difficulty with movement pertains to motor skills and may be associated with conditions like paralysis or motor dysregulation, while difficulty with sight refers to visual impairments that affect the ability to see. Hearing difficulties involve auditory processing and are linked to issues with the auditory system rather than the language centers of the brain.