How to install Adobe Acrobat Reader DC in Ubuntu?

There is no Adobe Acrobat Reader DC Linux / Unix version available.
So unfortunately you only can install the latest supported version 9.

If you alternatively want to install the older version of Adobe Reader,
follow this link already provided by @DevRobot under your question :

How do I install Adobe Acrobat Reader deb package downloaded from Adobe website?

Alternatively, there is a .run file for the Foxit reader for Linux.

However you should read How to Install Software when you're a future ex-Windows user first as .run files are more difficult to remove then .deb files.

If you still want to go ahead: FoxIt downloads page