Surveys are usually kind of ham-handed and don’t allow for any kind of subtlety. If the choices offered don’t fit your belief, you pick the one closest or you give up and don’t answer. I hate surveys, especially if they are written by people who don’t get the subject they are studying.
As for “works”, its really not that complicated. If you are walking with God, if the Spirit is resident in your life, there will be evidence of it in your character and in that piece of the world that surrounds you. Over time, as you walk it out, you and the space surrounding you will be different because God is alive in you.
Correct, however the issues Paul took with it in his letters dealt with people who did works in vain. They did them to try and earn favor with God or erase a bad deed. It was not out of joy and love for God. The way I always put it is the man who committed adultery. Can buying his wife a new car and taking her on a 10 day cruise erase the bad deed and make her forgive him? However the man who surprises his wife with gifts out of love and joy for her can surely make his marriage stronger.