You have run out of disk space on a partition.

Which of the following would be an easy way to move data to a new partition without reconfiguring the path to the data in existing applications?

A.
Run ext2fs ACL.

B.
Use a hard link.

C.
Use a symbolic link.

D.
Use the loopback device.

E.
Create a block device offset.

Explanation:
A) ACL specifies extended user and group rights on files and directories
B) Hardlink does not work over partitions
D) mounting something as loopback (mount -o loop) would require an image of the existing data
E) ?

If you use a symbolic link pointing from the new partition to the old data you do not need to move the data, since for users it would look like the data is already there. On the other hand, there would still be little diskspace left on the old partition / directory.