When you choose the compression level for videos the file will be compressed slightly and will maintain the quality of the videos?

When you choose the presentation quality compression level for videos the file will be compressed slightly and will maintain the quality of the videos. The presentation quality will not drop a ton, when you chose this level of compression for the files. If you compress the video too much, you can lose the quality of the photos and how they look to the viewer. 

Someone who diversifies investments is more likely to offset their losses with gains. This means that this person will balance both his gains and losses - he will stay in equilibrium, given that he doesn't lose anything, but he also doesn't gain anything. This is because many of these investments will bring him a lot of profit, but on the other hand, many will make him lose a lot of money.