28 to 30 correct: C1-C2 level : customized courses to your level and language goals. (91% to 100%)
You are virtually on a native level (or have an insane amount of luck while randomly picking answers) which means you need more guided conversation and practice, to help you improve your confidence and iron out a few wrinkles. Here we can use everyday or industry specific topics to hone your skills, all dependent on your needs.