Answer isD
by means of the Hall-Héroult process, in which a vast amount of electrical energy separates the element from aluminum oxide, makes
All other choice are fragments and do not contain verb for the main sentence
Choice E on the other hand changes meaning it is saying that the process along with high electrical energy makes the aluminum an energy-dense resource with a huge carbon footprint..
But that is not what the original sentence intends.
The electrical energy is consumed in the process
...
by means of the Hall-Héroult process, in which a vast amount of electrical energy separates the element from aluminum oxide, makes
All other choice are fragments and do not contain verb for the main sentence
Choice E on the other hand changes meaning it is saying that the process along with high electrical energy makes the aluminum an energy-dense resource with a huge carbon footprint..
But that is not what the original sentence intends.
The electrical energy is consumed in the process
...
![Midge Ure – A Man of Two Worlds (2026) [Official Digital Download 24bit/96kHz]](http://imghd.xyz/images/2026/05/09/zvc67e2mth34l_600.jpg)
.jpg)
