<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.nitafafanua kwa kina nukta nilizozitaja na nieleze kwa nini wazanzibari wanaweza kujinasua na utawala wa mabavu wa smz.  <response>: ill give you an overview of etfs, and i will explain why they are suited to individual investors. 