What the central idea of the text An incredible job:being America president ?

The information text “An Incredible Job: Being America's President” discusses the variety of responsibilities and duties required of the President. As students read, they will be considering the themes of America and social change and revolution as they relate to the text.

i think the life is invaluable.

you can also say immeasurable.

i think its c or d, its been awhile since i read this book