Im taking a post test and I need help please!!!

Which person is displaying honesty?
Chang always goes out of his way to help his friends when they need him.
Doreen cares deeply about animals, and she has been a vegan for the last five years.
John always donates to nonprofit organizations that address environmental concerns.
Preeti always covers for her best friend, Dana, who is regularly late for work.
Sam believes in stating the truth, however uncomfortable he feels.