The factor which does not cause a shift in chemical equilibrium is:
catalyst
Chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time. The factors which have an influence on chemical equilibrium are:
(i) Concentration
(ii) Pressure
(iii) Temperature
The change in any of these factors causes a shift in chemical equilibrium.
A catalyst do not affect the equilibrium state of a reaction. It helps the system to reach chemical equilibrium faster.