What is the safest way to use someone else’s creative work, no matter what kind of license it has (copyright, creative commons, check who owns the work assume that it’s in the public domain and use it however you want give credit to the creator ask permission to use the work

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is: