GWE11-31

no reference on this board.

Q31:

Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed.

1. remaining this way whether or not
2. remaining like that even as
3. remaining as such whether or not
4. remains in this way although
5. remains thus even when

Answer

I think E is more concise.