Correct Answer: E
Explanation:
For the triangles to be similar, the dimensions of all sides must have the same ratio by dividing the 3-4-5 triangle.
The 6-8-10 triangle will have a scale factor of 2 since all dimensions are doubled the original 3-4-5 triangle.
The only correct answer that will yield similar ratios is the 12−16−20 triangle with a scale factor of 4 from the 3-4-5 triangle.
The other answers will yield different ratios.