Fact 1: Damming a river can cause a lake to form. Fact 2: The dam also generates electricity. Given the two facts above, what can cause a lake to form?

Choose your answer from: (I). Something that generates electricity (II). water and minerals (III). rivers and streams (IV). fissures of hot, acidic water (V). dividing into two parts (VI). it flows to a lower level (VII). a hydraulic system (VIII). changing the phase
Answer:
(I).