so the graph (a) is correct.1 (b) V∝T for constant pressure and p∝T for constant pressureand mass. So, option (d) is incorrect. (c) p∝T and V∝T for constant pressure and mass. So, option (c) is incorrect. (d) p∝
1
V
at constant temperature and V can never be parallel to p for any pressure. Option (d) is incorrect.