The options of this question are:
1. 

2.

3.

4.

5.

The formula for area of rhombus is given by:
A = 
 where
 where 
 and
 and 
 are the diagonals of rhombus.
 are the diagonals of rhombus.
We have to determine the equivalent expressions.
Since, A = 
 
 
Multiplying both sides of the above equation by 2, we get
2A = 

So, 
 and
 and 

Hence, Option 1 and 4 are the equivalent expressions.