Final answer:
Chloe’s eating behavior exemplifies b)the ecology of eating, as she consumes more food in social settings. This shows the influence of social factors on dietary habits, which the set-point theory does not fully address.
Step-by-step explanation:
Chloe's eating behavior demonstrates the ecology of eating, which is letter B. This term refers to how social and environmental factors, such as the presence of others while eating, can influence an individual's food consumption. While the set-point theory explains body weight regulation as a predetermined ideal weight that our bodies strive to maintain, it does not take into account the powerful environmental and social influences on our eating behaviors, which is what Chloe is experiencing. Her challenge in maintaining her diet in social situations reflects the complexity of how our surroundings affect our dietary choices and body weight management.