Answer :

B) the one that has the sides 4 & 8 and 3 & 6.  

The length on both of these rectangles are twice as long as the width

one rectangle goes from a width of 4 and its length is doubled to a length of 8
it is similar to the 3 & 6 because the width of 3 is doubled to get the length of 6

hope this helps

The pair of rectangles that are similar is; the second one that has the sides 4 & 8 and 3 & 6.  

What are similar rectangles?

Two rectangles are said to be similar in this regards if the ratio of corresponding sides of both rectangles are the same.

Now looking at the given rectangles, the only two that have similar ratio of corresponding sides is the second one that has the sides 4 & 8 and 3 & 6.  

Read more about similar rectangles at; https://brainly.com/question/17905285