How did tang rulers change china?

An education expert is researching teaching methods and wishes to interview teachers from a particular school district. she randomly selects ten schools from the district and interviews all of the teachers at the selected schools. which type of sample did she use in this study? a)systematic sample b)probability sample c)stratified sample d)cluster sample

Which article of the us constitution addresses the issue of interpeting the laws of the united states

You are a cfp and although you never went to law school, you consider yourself to be very good at reviewing wills. your client, catherine, asks you to prepare a will for her. should you prepare a will for catherine? a. yes, catherine is your best client and you might lose her if you do not prepare the will.b. yes, it is permissible for a cfp to prepare a legal document. c. no, preparing catherine's will would be considered the unauthorized practice of law.d. no, you should only prepare catherine's will if you are going to prepare her husband's will as well.