What is the central idea of lines 16–30? Bertie believes Aunt Agatha is good at minding her own business.
Bertie believes Aunt Agatha is wrong about Gussie.
Aunt Agatha can’t contact Gussie to get him to change his embarrassing behavior.
Aunt Agatha takes Bertie by surprise so he agrees to go to America.

the rhetorical devices that he used in "common sense" are syntax for his sentence structure and pathos for his emotion against the british unfairly treating the "americans" and logos of what documents that what happened to the pilgrims when they had the mayflower compact and how that the british were wanting to have one religion but the compact said for any religion to be accepted.

either a donut or a sphere or a pancake or a flat sphere. it depends on where the vertical line is.

if the line goes through the center of the circle and is perpendicular to a diameter containing the center, then you get a flat circle.

if the line and the diameter of a the circle meet in the center of the diameter and at an angle, you get a pancake.

if the line is on the circumference of the circle and is at right angles   to the circle you get a ring.

if the line contains the diameter, you get a sphere.

the the line is parallel to the diameter and touches the circumference, you get a donut.