*PLEASE ANSWER, ITS CONFUSING!! ASAP* Which of the following statements describes an interspecific zone?

a.) This zone measures 20,000 feet to 36,000 feet below the surface, and has a name that means "unseen."

b.) This zone measures from 600 to 3,000 feet below the surface, and is sometimes referred to as the “twilight zone” because of the amount of ambient light available.

c.) This ecosystem is in a transitional area that is influenced by the cycle between low and high tides.