Q: Fact 1: Lakes are formed by precipitation and runoff. Fact 2: Rain is also known as precipitation. Given the two facts above, what are lakes formed by?

Available options:
1). ice wedging.
2). hot and cold.
3). rain and runoff.
4). Condensation.
5). rice and beans.
6). Physical weathering.
7). flooding.
8). ice and sun.
A:
3).