Final answer:
The term 'vegetarianism' represents a value that could be based on various personal principles, while 'dislike of McDonald's' constitutes an attitude informed by that value and beliefs about the company's practices. Thus, the option "a" is the correct answer.
Step-by-step explanation:
When considering the attitudes and values of your friend from India who is a lifelong vegetarian and who does not like McDonald's because of their involvement in selling hamburgers, it's important to understand the distinction between values and attitudes. Vegetarianism often represents a value, as it is a principle or standard of behavior that reflects a person's judgments of what is important in life. It can be based on ethics, religion, health, or concern for animal welfare. On the other hand, the 'dislike of McDonald's' represents an attitude, which is a settled way of thinking or feeling about something, typically reflected in a person's behavior. This attitude towards McDonald's is likely informed by the value of vegetarianism, as well as the person's beliefs about the company's practices and impact on society.