What is the simplest way to permanently get rid of an unwanted file?

a. cancel the file.

b. erase the file and save an empty file over the original.

c. send it to the recycle bin then empty the recycle bin.

d. go to the start menu and then delete the file

Now, I suspect the answer is c. As this is how to "delete a file". For the same result, in windows, you can hold shift then press delete, and it will permanently delete it in the same way.

However, when you a delete a file, the file is not physically removed from the disk until that files sector ('s) (sectors are the smallest addressable unit of a hard drive) is overwritten (works a bit differently for ssd's).