Adive instructor begins his lesson on the shore. as he guides his students out into the water, what zone are they in?

PLATO USERS

Intertidal Zone 10 m (33 ft)

Sublittoral Zone 200 m (660 ft)

Hadal Zone 10,911 m (35,797 ft)

Bathyal Zone 6,000 m (19,686 ft)

[ a ] the sublittoral zone or the shallowest bathyal zone

[ b ] the intertidal zone or the deepest hadal zone

[ c ] the oceanic zone or the deepest intertidal zone

[ d ] "The Intertidal Zone Or The Shallowest Sublittoral Zone."