Context: I did n't have to play any more CDs , but I went back to the MP3 player later and managed to mute the cable - change noise . So at least there was a learning curve . The microphone was difficult . I expect there are better ways to hold and speak into it , as I struggled to make myself understood .

Question: Which of the following was not a part of the learning curve ?
Options:
0. Making myself understood while speaking .
1. Holding the microphone correctly .
2. No longer having to play any more CDs .
3. None of the above choices .
Answer: 2