In that case you could use ethanol as a fuel, reactant for esterification, ethene production, solvent, disinfectant, heating, etc. There are way too many options for ethanol if you follow the logic that you can use anything as long as you justify it. All you guys are saying ethanol -> ethene is possible therefore its correct. While the question does state what are the use of ethanol, you should also know in some marking criteria they reward certain uses over others? In industrial chem, there was a question on the comparison between NaOH cells, and there were Low and high quality comparisons, despite the fact that the "low quality" answers still technically answer the question.