OK. So you are going to lose one thing. Your sight, your hearing or your speech. Which one could you not live without?
For me, for example, I would select my hearing. My life is music. Spend most of my time listening to my music. Life without music would not be life at all. People would argue that if you lost sight you would not be able to use the net or watch football. That seriously would not bother me. I could listen to football.
So the one thing I would not like to lose would be my hearing.