my lease is about to come up and i have to patch up my floor if i want to see my deposit back. the coating on the floor feels like polyurethane, or a thin lacquer, i cannot tell which. 
you can see the spot in the picture.
the spot (area B in the picture above) was caused by a wooden chair without proper footing scrapping against the boards. the area you see is where the wood feels raw and unsanded, with the coat of finishing gradually coming on around said area.
can i doctor up this one patch? will i need to pry up the floor? How do i accurately tell the kind of coating on the floor? if i can fix just the patch, how would i go about doing that?
Best Answer
In an attempt to try to answer your question there are a couple of important additional pieces of information needed. This request for clarification is being put in answer space because there is no provision for showing a picture in the comment space.
First off need to know what caused the damage in the first place. Please be accurate as possible.
Secondly the photo shows a surprising number of defects in the floor which I have labeled as A to F in the picture below. What area are you thinking needs fixing?
Answers to these items are going to greatly inform useful answers that you are likely to get.