With this! what makes a conclusion effective?
a. to bring closure and answer questions.
b. to have a longer essay.
c. nothing, a conclusion is not necessary.
d. 2 sentences

A. To bring closure and answer questions.

Explanation:

This is because typically the purpose of a conclusion in an essay is to bring it to an end or "close" it. In this case, A. is probably your most likely answer as it describes the purpose of a conclusion is to bring "closure"  to your essay. Think about it just like an introduction, it begins or starts an essay, same with a conclusion! Most importantly, the conclusion should have touched upon and the topics touched on previously written above in the body of the essay giving it the total ending.

I hope this helps, have a great day! :)

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.

man vs. nature - first choice