Which superhuman power would you choose, given the option between teleportation and mind control, and why?
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Teleportation. You can teleport anywhere within your line of sight, and anywhere you have already been. The range is limitless. So if you have been to Paris, you could teleport to Paris. Basically the same as in the movie Jumper. As for what you can teleport: yourself, your clothes, items in your pockets, etc., and cargo up to half your body weight. That much cargo takes a great deal of effort, however. You do not know what would happen if you tried to teleport with a living passenger.
Mind Control. You can telepathically seize control of the mind of any person within your line of sight and compel them to do your bidding. Once you have established control, you can retain it even if the victim leaves your line of sight, at an unlimited range. But once you relinquish control of an individual (or if your hold is broken), they would need to be in your line of sight for you to re-establish control. You can control up to four people at a time, but the more people you are controlling the more difficult it becomes.