Irritability, poor concentration, and depression are some of the _____________ withdrawal symptoms of substance withdrawal.

The correct answer is emotional. Irritability, poor concentration, and depression are primarily associated with an individual's feelings and emotional state during withdrawal from substances. This type of symptom reflects the psychological stress and emotional turmoil that can accompany the process of ceasing substance use.

Emotional withdrawal symptoms often manifest as changes in mood and mental state rather than physical health indicators. While physical withdrawal symptoms can include items like sweating, tremors, and nausea, they are distinct from the emotional impacts which revolve more around feelings and mental functions. Understanding this distinction is crucial for recognizing the broader effects of substance withdrawal, and it helps in providing appropriate support and treatment for individuals experiencing these symptoms.