Which Statement Best Describes the "Introducing the Text" Part of a Literacy

Which statement best describes the "Introducing the Text" part of a literacy lesson?

A) Key vocabulary is taught and students set purposes for reading.
B) Background knowledge is activated and the teacher gives the students purposes for reading.
C) The teacher provides background knowledge and gives the students purposes for reading.
D) Background knowledge, including key vocabulary, is activated, assessed, and developed, and students set purposes for reading.