Which of the following lines is an example of onomatopoeia?
a. dreamless, uninvaded sleep
b. the sound of steel on stones
c. thump, thump, thump
d. a sad, raggy tune

The correct answer is C. Thump, thump, thump

Explanation:

In writing, an onomatopoeia refers to a word that imitates or represents sound, including sounds from animals such as the onomatopoeia "meow" that represents the sound made by a cat or sounds from objects such as "bang" that can represent the sound of an explosion, this is commonly used in certain types of texts such as comic books that use onomatopoeia to emphasize the sound or effect of certain actions. Additionally to this, as language onomatopoeias are not universal despite they represent universal sounds, because of this one sound can be represented in different ways according to the language. Considering this, the line that is an example of onomatopoeia is "Thump, thump, thump" because these are words are being used to represent or imitate the sound of a blow or a rhythmic sound, which is exactly the purpose of onomatopoeias.

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.