Answer:
 ⇒
 ⇒ 

 ⇒
 ⇒ 

 ⇒
 ⇒ 

 ⇒
 ⇒ 

Explanation:
Let's go in order and find the matching component:
1. 

All the resulting bottom values have no coefficients in the outside of the root. So we can start by putting the coefficient inside.
 , and one of the answers has 12 in them but the x on the outside which we can just get by sqaure rooting the
 , and one of the answers has 12 in them but the x on the outside which we can just get by sqaure rooting the 
 . So, it will be
. So, it will be 

2. 

Same thing, let's put the coefficient and variable inside. 
 . Now we can just square root the y and bring it outside the radical :
. Now we can just square root the y and bring it outside the radical : 

3. 

Let's do the same as the other two. 
 . Now square root the
. Now square root the 
 which is just
 which is just 
 and bring it outside the radical -->
 and bring it outside the radical --> 

4. 

Lastly, same thing again. 
 . They didn't completely simplify, however,
. They didn't completely simplify, however, 
 is equivalent.
 is equivalent.
That's it!