I think E is trying to imply sunscreen doesn't work for people (who believe themselves) to be most susceptible to skin cancer. But what about other people? To weaken the argument, E also has to assume that other people use sunscreen and it works, which is a lot to assume.

I agree with your point that A has to assume people in the study receive their lycopene from fruits and vegetables, but D also has to assume both that people in the study receive their lycopene from fruits and vegetables and that there are other nutrients in fruits and vegetables reducing stroke risk, which is A. I think A is slightly better than D simply because, for D to be correct, it has to assume A.

I don't think you can use an iPad for the actual test unless you request special accommodations from LSAC. If you request accommodation from them, they will probably send you a specially designed iPad. Otherwise, the general proctorU interface just does not support an iPad.

173+ on this November LSAT!!!