Do players take showers after high school football game

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

Adisaster costs more where there is poverty and lack of awareness.explain.

Popular culture mainly encompasses the realm of a-politics b-religion c-business d-entertainment