Answer: B
Step-by-step explanation: this is the formula for a sphere 4/3 π(r3)
The “r” represents radius, which is given to you (8)
The rest is part of the formula, that already exists
If you get another question like this, just look up the formula for the shape they are asking you for, In this one they asked for a Sphere. Therefore you would look up “ Formula For Sphere”. Hope This Helps!! :)