Answer: URN(Uniform Resource Name) is the basically a subset of the Uniform Resource identifier(URL). It uses "urn"scheme for the working an implementation. Uniform resource name functions by identifying components uniquely through their name.
The most common example of URN is ISBN (International Standard Book Number)number which helps in the unique searching and identification of book.
My opinion is the answers A and D. I would choose A if you can only choose one, though.
Answer:
B.) Open Office Impress
Explanation:
The options are:
A.) Open Office Writer
B.) Open Office Impress
C.) an outline
D.) photographs
Out of the above, the Impress is used for doing complex presentation, and its one of the best tool for it like PowerPoint. Its quite the same as PowerPoint, and it supports both ppt format as well as odp or the open document presentation format. You can make very complex presentations with the help of the Open office Impress.