Use a command which shows only the permissions, and the name of files/directories under /etc directory. The list must be sorted in a descending
order based on the name of the files.

All links together are together

Metaprogramming  is a programming technique in which computer programs have the ability to treat programs as their data. it means that a program can be designed to read, generate, analyse or transform other programs, and even modify itself while running. ps: you don't have any options there.

Middleware

Ithink it's b. not sure though.