The answer is the letter a
Trash bin
Reasons:
When you remove a file from the hard drive it is still written in binary code. So, windows places files in the *trash bin* if you did not want to delete it.
Unless USB or Removable flash drive, when you delete that it does not place any files in the trash bin.
Answer:
Explanation:
1 robotics
2. Engineering
3. Government
3. Industries
5. Individual programming
6. Business
7. Schools
Etc