Which of these sentences contains a subordinate clause?

A) The poem that I read in class is by Maya Angelou.
B) The maple tree in the back yard grew to be quite tall.
C) Working the early morning shift can be very exhausting.
D) The red cardinal stood out against the white snow and the black barn.

What is the purpose of text features? (5 points) they readers understand what they should learn from the text. they provide legal documentation to researchers who cite the sources. they work to demonstrate factual evidence of ancient historical statistics. they allow readers to make up their own minds about what really happened.