Web Programming and Data Managemet
Like winkio and gameus already said, this is probably the most useful. Not only should you learn about web development, but also a bit about databases and the MVC design pattern which are very, very useful. Best pick IMO as well. It doesn't matter how hard it is or how much work you will have to put into this class. It's worth it. This is the knowledge that you will most likely will be using in the future.
Introduction to Game Design and Production
This might sound great, but Unity is not that hard. If it was a generic class, I'd recommend it over web dev. But if it's just Unity, just pass. You can learn the majority of Unity with tutorials in 2 weeks if you put your heart into it.
Data Security and Encryption Techniques
I've had this stuff mostly within other classes while at the university, even in my graduate program. It might sound interesting, but trust me, it's not. Algorithms are cool in general, but stuff is boring as fuck. The only algorithm worth learning is the one for asymmetric encryption anyway. Literally more than half of the stuff we learned isn't used anymore, because it's inferior technology. Unless you want a job as a security expert in the future, this class will be a waste of time. We even had good professors on these classes and they were still horrible. Don't waste your time on this.
*** BONUS ***
Computer Graphics
You will most probably learn how to use matrix transformations for 2D and 3D and 2D image manipulation as well as techniques for analyzing and filtering 2D graphics. If you're into this stuff, it's definitely interesting, especially in game development on a lower level. But it's also not that easy. At least it wasn't easy on my university. I haven't taken it myself, but I know a few people that did. And they were far from stupid. In fact, they had better grades than me, but they still had problems with this class. Your call if you really want to take it. Also, maybe the program for this class at your college isn't that difficult. Best you ask around if anybody knows anything about it.