What is causing my car to make a clicking sound while stalled in D.

Yeah it still rolls in park

Park no longer holds car in place...and no longer drives in gear.....,.. The most likely suspect is one of the axle shafts has popped out of the transaxle!... 98% chance of that!

Huh I didn't think if that, I'll check it out thanks man! What would explain the clunk noise though? And a bad oil leak? Would that be a complete different problem?