What JDeveloper facility is being described in the paragraph below?

What JDeveloper facility is being described in the paragraph below?
It allows you to create multiple connections to one or more otherwise unrelated repositories so
that you can browse their contents. It provides a Search tool to enable you to search all the
defined repositories. If you find resources that your project may need to consume, you can drag
those resources into your application as needed.”

A.
Database Navigator

B.
ADF Library JAR file

C.
a version-control tool, such as Subversion

D.
resource catalog

E.
Application Resources accordion

Explanation:
http://download.oracle.com/docs/cd/E21764_01/webcenter.1111/e10148/jpsdg_catalog.htm