Which sentence contains an error in the use of end marks or commas?
a. if i recall, i think that was the year we moved to cleveland, ohio.
b. they arrived here from naples, italy, on november 11, 1923.
c. the play we will perform this year is a classic, written by george bernard shaw.
d. there's a map of the settlement of jamestown, virginia, on page 54.

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.