Which eating disorder involves consuming a significant portion of daily food intake after the evening meal?

The correct choice, which identifies the eating disorder characterized by consuming a significant portion of daily food intake after the evening meal, is indeed night eating syndrome. This disorder is specifically marked by episodes of consuming large amounts of food during the night, often after waking up from sleep. Individuals with night eating syndrome may experience a lack of appetite during the day and feel compelled to eat large quantities of food at night, which can lead to noticeable weight gain and emotional distress.

In contrast, the other disorders mentioned do not typically focus on night-time eating behavior as a primary characteristic. Anorexia nervosa is primarily defined by excessive food restriction and an intense fear of gaining weight, not by eating patterns occurring primarily at night. Binge-eating disorder does involve episodes of consuming large amounts of food, but these episodes can occur at various times throughout the day and are not exclusively at night. Bulimia nervosa also involves episodes of binge eating followed by compensatory behaviors, but, again, this disorder does not specifically indicate a focus on eating during the night. Therefore, night eating syndrome stands out as the correct answer based on its unique association with nighttime eating behaviors.