Which of the following has a positive effect by acting as an artificial reef in some areas?

a. undersea cables

b. fisheries management zones

c. wind turbines

d. unexploded ordnances

The answer is letter A. Undersea cables have been known to create a positive impact within the environment of the seabed. As the installation of these items continue within the sea, habitats start to form around them because of its sturdy quality. Some animals depend on them like star fishes and sea anemones. In fact, studies have been made on how these cables can really support vast spaces of artificial reefs.