Answer:
The first, third, and last
Step-by-step explanation:
The first prism has a length of 5, which is half of the original, a width of 3, which is also half, and a height of 6, which is once again half. Since all of the dimensions are in the same ratio to the original pyramid, they must be similar. The same applies to the third and fourth pyramids, except with different scales. Hope this helps!
