<prompt> Translate the following text to EnglishKwa ujumla, wataalamu wa uchumi wana mwelekeo wa kuona nia ya mtu binafsi ya kulipa kwa ajili ya kuboresha ubora wa mazingira kama kipimo kamili zaidi na sahihi ya thamani ya kupunguza hatari ya mazingira au afya.  <response>: In general, economists tend to view an individuals willingness-to-pay WTP for an improvement in environmental quality as the most complete and appropriate measure of the value of an environmental or health risk reduction. 