I would say #2, because it is very important to eat a well balanced diet while also working out and staying physically active to stay healthy! However, the question asks, "Which of the following is a guideline for practicing good nutrition." That being said I would say #4 "Consume foods with a variety of nutrients and adequate portions. Hope this helps!
physical, mental, emotional, and social health are all related in connection to our self esteem and what we think about ourselves. it usually will determine our mood.