What are the option in facebook for developer like if i want to create app in facebook then how can i create it.First of tell me it is possible or not.
Have you tried looking for this information yourself?
A quick search on Google for create facebook app brings up lots of results, and the first one (from Facebook themselves) seems to answer your question perfectly.
And that said, this thread is closed.
Please search (both the forums and via your favorite search engine), and if you've still got SPECIFIC questions, please feel free to repost.