Answer:
3rd and 4th one. 
Explanation:
So we can just do this by simplifying each expression
The expression we are comparing the answers to is:
24 
because
(-6) (-4) = 24
So now we just see which ones are equal to 24. 
1). -24 (no)
2). -24 (no)
3). 24 (yes)
4). 24 (yes)