The correct answer option is b) 2(a + b + c).
We are given two similar triangles A'B'C' and ABC with the lengths of their corresponding sides.
From the diagram, we can see that side a = 4 in triangle ABC while its corresponding side is 8 which means that triangle A'B'C' is twice the size of ABC.
So we can write the following expression for the perimeter of A'B'C':
2(a + b + c)