The given statements state that Mohan is a good sportsman and that sportsmen are healthy.
Conclusion I states that all healthy persons are sportsmen. This conclusion cannot be inferred from the given statements because being a good sportsman is not the only criteria for being healthy. There could be other factors that contribute to a person`s health besides being a sportsman. Therefore, Conclusion I does not follow.
Conclusion II states that Mohan is healthy. This conclusion can be inferred from the given statements because it is stated that Mohan is a good sportsman and sportsmen are healthy. Since Mohan is a sportsman, it can be concluded that he is healthy. Therefore, Conclusion II follows.
Based on this analysis, the correct answer is option 2: Only Conclusion II follows.