i believe you are the same Guest as the one who asked a very similar question, except about parallelograms.
so, again, i'm not sure how to explain this, but i believe the answer is option 3.
here is a site that has more information on rhombuses:
hope this helped! if you are interested in why 1, 2, or 4 are all properties of rhombuses, feel free to ask here, check the site i linked above, or do a quick internet search!