Grade points can take on any numeric values between 0 and 4. they are an example of a variable.
a. continuous
b. discrete

B)  They are an example of a discrete variable.

Step-by-step explanation:

Given : Grade points can take on any numeric values between 0 and 4.

To find : They are an example of a variable.

Solution : We have given that :

Numeric values between 0 and 4 ( 1, 2, 3, 4)

Discrete data : which has certain values

Example :  the number of students in a class, We can't have half a student!

Continuous data : Continuous Data can take any value (within a range)

Example : A person's height.

Since , numerical values 0 to 4 is countable

Therefore, B)  They are an example of a discrete variable.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.