The man who witnessed the accident is most reliable as he would’ve seen what happened.
The man who arrived after wouldn’t be reliable as he wouldn’t of known what happened since he wasn’t there during the accident
The woman whose friend was hurt in the accident may not of been there and so she wouldn’t be a reliable source
The woman who saw several reports about it would only know what happened from the news stations and they may not have the correct information
Hope this helps :)
