Which of the following sets could be the sides of a right triangle? a. {2, 3, sq root 13) b. {2, 2, 4} c. (1, 2, sq root 3}

Your answer is a. {2, 3, √13}. This is because you can use the formula a² + b² = c², which can only be used with right triangles, and it is correct. 2² + 3² = 13, and so the hypotenuse would be √13.
I hope this helps!