Physicists sometimes hypothesize the existence of the "gravitron". This would be a particle responsiible for the force of gravity. Would you expect the gravitron to be a part of the standard model for physics? a .Yes, because the standard model describes all the fundamental forces like gravity.

b. No, because the standard model does not include particles in the discussion.

c. Yes, because the standard model describes the effect of gravity on particles.

d. No, because the standard model describes only the fundamental forces other than gravity.