(03.01 mc)barney and marshall have been participating in outdoor activities. barney has been hiking and doing tai-chi alone in the park. marshall has been playing 3-on-3 basketball and soccer. which long term benefit will marshall experience, but barney will most likely not? better overall health better body composition better peer relationships better mental health

Better peer relationships

Explanation:

Barney and Marshall are doing great physical exercises that will improve their physical and mental health. Both Barney's and Marshall's physical practice are great healthy options to better your body, be more disposed of, and prevent a range of illnesses. However, Barney practices his physical activity on his own, so does not establish friendly relationships with anyone. On the other hand, Marshall practices his group physical activity, establishing better peer relations.