A through POE.

To me its A as well.

i THINK it is D ? wats the OA?

IMO D.

In A - soil erosion : rogue element.

I think it is D. What is OA/OE ?

clear D..

We need to see which option is the most politically correct option

The OA: D
Cheer

I would say D.

Largest volcano found in Mars. No such volcano would exist on earth b/c the earth's crust is to thin to support.

(A) The surface of Mars is less subject to forces of erosion than is the surface of the Earth.
No one said anything about erosion.

(B) The highest volcanoes on Mars occur where its crust is thickest.
No one said that either.

(C) On average, volcanoes on Mars are higher than those on Earth.
Didn't cross this out at first. But Mars may only have that one huge volcano and the rest could be smaller. So we can't say for sure that all its volcanoes are on average higher than those of the Earth

(D) The crust of Mars, at least at certain points on the planet, is thicker than the crust of the Earth.
True. If no such volcano can be supported on Earth b/c the crust is too thin, then obviously if it exists in Mars, there must be a spot on Mars that can support that volcano - and that spot has to have thicker crust than that of the Earth.

(E) At least some of Earth’s volcanoes would be larger than they actually are if the Earth’s crust were thicker than it is.
We don't know that for sure, may be and may be not.

In my opinion A is the most logical one

The argument claims that the volcano of such density could not exist on earth despite having gravity as low as that of Mars because of its thin crust. Now, If no such volcano can be supported on Earth because of its thin crust, then there must be a spot on Mars that can support that volcano and that spot has to have thicker crust than that of the Earth. So, D is the answer.