Context: They leaned together as he looked over her shoulder at the page she was reading . He slide his arm around her , drawing her close as she leaned against him . He would whisper into her ear the answers to her questions ... " So photosynthesis has three cycles right ? " " No , just two . "

Question: Why did he slide his arm around her ?
Options:
0. Because he needed to mention something about photosynthesis .
1. None of the above choices .
2. Because he likes her .
3. Because he wanted to whisper something to her .
Answer: 2