Which of these short passages uses indirect characterization?

a) old man benny walked like a stooped giraffe. his face was dark as coal, and his hands were riddled with hundreds of cuts.

b) the boy commented on how beautiful the manor was and how lucky the people living there would be.

c) miss sara looked at the homeless girl with tears in her eyes. she quickly removed her coat and draped it over the girl's shoulders.

d) the sharpe family's home was always filled with cheer and laughter. but their neighbor, mr. andrews, preferred silence.