Final answer:
A Compliant individual is most likely to become a vegetarian if their partner wants them to because they are characterized by a willingness to conform to others' requests.
Step-by-step explanation:
The person most likely to become a vegetarian because their partner wanted them to is c. Compliant individual. This choice highlights a personality trait characterized by a willingness to conform to others' expectations or requests. Independent eaters are typically less influenced by others in their food choices, making their own decisions regardless of others' preferences. A health-conscious person may choose vegetarianism more for personal health reasons than a partner's influence, and stubborn eaters are less likely to change their eating habits, especially if they are based on deep-seated personal preferences or principles.
People with health issues that affect their ability to eat or those already avoiding certain food groups for ethical or health reasons might be more open to such changes but generally on their own terms, not solely based on a partner's wishes.