Question

Which cross section best represents the convection currents in the mantle beneath the peru-chile trench?

Answer 1

Reason
The movements of mantle materials in convection cells found at trenches throughout the world are similar. The "Inferred Properties of Earth's Interior" diagram in the Earth Science Reference Tables illustrates the convection found in a trench west of the Cascade Mountains of North America and is shown below

Answer 2

The attached image shows the best representation for the convection currents in the mantle beneath the peru-chile trench. You will notice in the image there are two convection currents, one moving in the clockwise direction and the other is moving in the counter-clockwise direction.