Option C: 'Boutique' is 'a small shop selling fashionable clothes or accessories'.
This word means the same as the given expression and hence option C is correct.
Option A: 'Booth' is 'a temporary tent or structure at a market, fair or exhibition'.
Option B: 'Stall' is 'a stand, booth or compartment for selling goods in a market or a large uncovered area'.
Option D: 'Store' is 'a shop of any size or kind'.
These words do not mean the same as the given expression. Hence options A, B and D are wrong.