What is the purpose of the cause-and-effect signal word “therefore”? It signals to the reader that there is more information about the research surrounding how much time should be spent at recess. It signals to the reader that the writer is going to offer an opposing view about how much time should be spent at recess. It signals to the reader that the person has come to a decision about how much time should be spent at recess. It signals to the reader that the idea of how much time should be spent at recess is debated due to different research findings.

It signals to the reader that the person has come to a decision about how much time should be spent at recess.

Explanation:

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.

1 - a

2 - a

3 - c

4 - b

5 - d