Thanks everyone for the advice. I’ll most likely accept the industry internship offer, given the uncertainty of the other one. It does seem unlikely that the research internship will be settled within 2-4 weeks.
On the other hand, it feels like I’m throwing away an incredible opportunity since the research internship is at a very prestigious university, but I guess I can’t have everything. The timing is unfortunate because as a junior, I only have time for one internship before college applications.