The procedures for reporting potential unanticipated problems involving risk to subjects or others to the irb are

Determined by the institution in its written policies and procedures

Hope this helps.

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.