Which of the following is characterized by difficulties in handwriting?

Dysgraphia is a specific learning disability that primarily affects a person's ability to write. Individuals with dysgraphia often have difficulties with handwriting, which can manifest as messy or inconsistent handwriting, trouble with spacing, and challenges in organizing thoughts on paper. This condition may occur despite a person's overall intelligence being intact, and it specifically hinders the physical act of writing and the ability to translate thoughts into written form.

In contrast, auditory processing disorder relates more to how the brain interprets sounds rather than writing abilities. Dyslexia is primarily focused on challenges with reading, such as decoding words and recognizing written language. Developmental disabilities encompass a broader range of conditions that can affect a person's physical, learning, language, or behavior areas, but they do not target handwriting specifically. Thus, dysgraphia directly aligns with the challenges experienced in handwriting, making it the correct answer.