Can someone help wi the this question if u know the answer only no guessing acceptable Who is responsible for students adhering to the personal protective equipment PPE requirements in posted areas

Technologists
Faculty
Security
Chairs
Students.

The travels of marco polo.what is the author’s purpose for writing this text?

Ill give 50 points and brainiest if i can. would be grateful for any on this. the industrial revolution moved the united states into a new economic era. using the resources provided respond to the following prompts as they deal with economic development in the united states. using the maps available on the web links tab, explain the economic development of the united states, especially in regard to its emergence as a major industrial power. (focus on industrial sections; cities and towns; territorial growth; agricultural, mineral, and resource regions; coal fields; slavery; value and production; and distribution of agriculture and manufacturing areas.) using the available maps, explain the economic advantages of the physical geography of the united states. explain the gains that the united states made from trade.

Where sarah live? a. are b. is c. do d. does