Q: You are presented with the quiz "What requires sunlight?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aplant requires sunlight for photosynthesis" and "leaves are the sites of photosynthesis". So, what's the best answer to the question?

OPTIONS:
[1]. water;
[2]. leaves;
[3]. wood;
[4]. sugar;
[5]. gasoline;
[6]. animals;
[7]. Nematoda;
[8]. Jellyfish;
A:
[2].