The purpose of a clear ethical code in a 4 is

Ato draw on employees religious background
Bto encourage philosophical debate among employees
Cto regulate employees’ private conduct
Dto manage values and conflicts among them

Verified Answer :

I would definitely reject the first answer : ethics is also not connected to religion.

I would also reject the second answer: An ethical code is more about the actual behaviour than about the debates.

Also the third answer is incorrect: companies should not interfere in people's private lives.

This leaves us with the last answer, which is correct!