The executives of ITA Insurance, Inc. feel that "a majority of our employees perceive a participatory management style at ITA." A random sample of 200 ITA employees is selected to test this hypothesis at the 0.05 level of significance. Eighty employees rate the management as participatory. The critical Z- Value is

a- -1.96

b- 1.96

c- 1.645

d- -1.645