The thesis, or controlling statement is the what of piece of writing

How does this passage contribute to the overall meaning of the story

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

Explain how advancements in technology have affected the diversity of our news, how we receive it, and how it is portrayed by the media.