You can narrow down to options D & E by using paralellism - 'changes' and 'remains' are parallel in structure.aspirant2011 wrote: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.
A. remaining this way whether or not
B. remaining like that even as
C. remaining as such whether or not
D. remains in this way although
E. remains thus even when
[spoiler]OA: Will be posted later. Please discuss each answer choice in detail[/spoiler]
As discussed, the use of 'when' is correct here since it implies a point in time. 'Thus' refers to the graphite in the diamond form.
