Which of the following is most likely to be an indicator of psychological instability in an individual?

• A. Temporary nervousness before public speaking
• B. Consistent ability to adapt to new situations
• C. Frequent and unpredictable mood swings that interfere with daily functioning
• D. Occasional feelings of sadness after a stressful event

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the concept of psychological instability, which generally refers to patterns of emotional or behavioral responses that are unpredictable, intense, and interfere with an individual's ability to function in daily life.
2. Step 2: Analyze each option by considering whether the behavior is temporary and situational or persistent and disruptive. Temporary nervousness before public speaking is a common, situational response and not indicative of instability.
3. Step 3: Recognize that a consistent ability to adapt to new situations reflects psychological resilience and stability, so this is not an indicator of instability.
4. Step 4: Consider that occasional feelings of sadness after a stressful event are normal emotional responses and usually do not indicate instability unless they are prolonged or severe.
5. Step 5: Identify that frequent and unpredictable mood swings interfering with daily functioning suggest a pattern of emotional dysregulation, which is a hallmark of psychological instability.