Question

what marks the true division between continents and oceans?
alluvial fans
coastlines
granite-basalt transitions
abyssal plains
coastal deep-sea trenches

Explanation:

To determine the true division between continents and oceans, we analyze each option:

• Alluvial fans are landforms formed by sediment deposition, not a division between continents and oceans.
• Coastlines are the visible boundaries between land (continents) and ocean water, marking where land meets the ocean.
• Granite - basalt transitions are related to rock types and crustal composition, not the division between continents and oceans.
• Abyssal plains are deep - sea floor features, not a division between continents and oceans.
• Coastal deep - sea trenches are deep depressions in the ocean floor, not a division between continents and oceans.

Answer:

B. Coastlines