Between C and E
The basic idea of parallelism: 'match things that actually match'.
The 'wh' words are MORE LIKE EACH OTHER than like othernouns.
Discussion of greenhouse effects has usually focused onwhether Earth would grow warmer and towhat extent,
The discussion of greenhouse effects has usually focused onwhether Earth would grow warmer and the extent that is,
...
The basic idea of parallelism: 'match things that actually match'.
The 'wh' words are MORE LIKE EACH OTHER than like othernouns.
Discussion of greenhouse effects has usually focused onwhether Earth would grow warmer and towhat extent,
The discussion of greenhouse effects has usually focused onwhether Earth would grow warmer and the extent that is,
...
