Mr. vrabel is an eighth-grade social studies teacher. he is teaching a unit on the great depression. before the students read the text, he informs them of the purpose of learning about the depression and provides some background information. in addition, he introduces new vocabulary and provides an overview of the unit. he is providing: a) a schematic organizer. b) semantic mapping. c) an advance organizer. d) a graphic organizer.

C) An advance organizer.

Explanation:

An advance organizer is what teachers provide their students' whit to guide them through a subject before starting the class. It allows teachers to introduce information and lead the way on how to aproach it. It provides a preview of the matter and is intended to get students interested in knowing more. Furthermore, it helps them link previous knowledge with what they’re about to see.

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