Could someone please help me with these 3 questions thank you!

What does the sociological imagination refer to?

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

True or false: determining the source and motive of an ad for a health product will you decide whether the ad is a reliable source of health information.