According to Peter Newell (2001), a code of conduct can be used by a non-governmental organization to:

		a. encourage shareholders to sell stock in a given company if it does not improve its environmental performance.
		b. improve a company's public image by highlighting how it meets or exceeds environmental standards set by the code of conduct.
		c. encourage college graduates to be aware of the environmental credentials of companies with whom they may seek employment.
		d. All of the above.
		e. None of the above.