Context: But Bella was barely listening . She was watching the instructor , only a few years older than her mere fourteen years , prepare for another serve . His muscles rippled through his shirt as he raised a sculpted arm and swung through .

Question: Why is Bella not a disciplined student at the moment ?
Options:
0. None of the above choices .
1. Bella is enamored with a guy .
2. Bella is bored with studying .
3. Bella is careless with studies .
Answer: 1