its d for apex.............................................................
I guess the theme is that you can't give somebody your work because Atlas was trying to give his work to Hercules which is a unresponsive thing to do and he's not taking responsibility for the work they gave him.
Participle
An participle is a word that is usually a verb but is being used in a sentence as a different part of speech.
Examples:
Draw = drawing; drawn
Run = running
Laugh = laughed; laughing
Type = Typed; typing
Cut = cut