<prompt> Translate the following text to SwahiliEspecially now, when any investor can obtain almost perfect diversification with index funds and index options--and thus get the exact return of the market as a whole.  <response>: Hasa sasa, wakati mwekezaji yeyote anaweza kupata karibu kamili diversification na fedha index na chaguzi index - na hivyo kupata kurudi sahihi ya soko kwa ujumla. 