<prompt> Translate the following text to EnglishKatika mwongozo huu wa mtendaji, tunasisitiza hatua nyingi za kimkakati zilizochukuliwa na washiriki wa utafiti 4 ili kupunguza malipo yasiyofaa.  <response>: In this executive guide, we highlight many of the strategic actions taken by the study participants 4to reduce improper payments. 