I'LL GIVE BRAINLIEST TO THE CORRECT ANSWER. ANSWER ALL THREE PLEASE!

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

How does it change your understanding of the laws to read them as a primary source rather than just a summary of laws?

Plzzz me needs a hyphen or no hyphen 1. laura, a friendly little girl, says hello to everyone she passes 2. my uncle is well known jazz musician 3. our school's winning football record is welll known 4. the angry looking woman was having a heated discussion with the store manager.