Answer:
The man who is sitting recently received medical attention.
Step-by-step explanation:
Interestingly, based on the description of the photo, we could get some measure of detail about the surroundings.
Remember, we observe that the three men were standing not sitting behind the other man; meaning they likely have enough/more strength to stand. So, it seems most likely to say that the man who is sitting recently received medical attention, that's why he sits to rest and regain his strength.