The answer would be Mesozoic.
HOPE THIS HELPS YOU! ^_^
Answer:
A,B,D
A. Allows you to be sure the problem and solution are understood
B. Presents the solution in a manner that is easy to share
C. Is a starting point for all other activities
If it is on the desktop screen you just right click on the icon and select delete. from there if you're on a windows computer it goes to your recycle bin then you right click the recycle bin and a little rectangle pops up an in that rectangle it says clear recycle bin and once you press that all of the stuff that was in there is deleted. now if your on a computer that has chrome os installed you just go to the files screen and right click what you want to delete and click delete and it's gone.
It might be a virus, when my computer starts going crazy i just bought a fixme stick and they work amazing or trying getting an expert to fix it if it worse
