<p>Do the two with the highest scores: Math and History. 750 is always more impressive than 710.
Also, since you’re applying undecided, you might as well have both a liberal arts-ish SAT II and a science/math related SAT II. It shows you are rounded and will do well in either field.
Good luck!</p>
<p>the reason I was thinkin of sending all three is because then hopefully the colleges will either see that my range is okay, or they’ll just disregard the one they see as weakest and won’t hodl it against me.</p>