Final answer:
Neuroticism is the personality dimension indicating a propensity for poor emotional adjustment and negative emotions like anxiety and hostility. Option A is correct.
Step-by-step explanation:
The personality dimension that represents a tendency to exhibit poor emotional adjustment and experience negative effects such as anxiety, insecurity, and hostility is neuroticism.
People who score high in neuroticism are prone to experiencing emotional instability and may often feel angry, impulsive, and hostile.
In contrast, individuals with low levels of neuroticism usually have a calmer and more stable disposition.Therefore, Option A is correct.