What does this quote mean?

The speech president kennedy's report to the american people uses logos, ethos, and pathos, which are

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

Write a summary about what you have learned about interpreting literature and presenting it to an audience.