Answer:
C. The poems follow different rhyme schemes.
Step-by-step explanation:
In Henry Wadsworth Longfellow's "A Psalm of Life", the rhyme scheme is as follows:
Tell me not, in mournful numbers, A
Life is but an empty dream! B
For the soul is dead that slumbers, A
And things are not what they seem. B
However, in James Russel's "Auspex", though it too has a rhyme scheme, it is different than the one in "A Psalm of Life". See here:
My heart, I cannot still it, A
Nest that had song-birds in it; A
And when the last shall go, B
The dreary days to fill it, A
Instead of lark or linnet, A
Shall whirl dead leaves and snow. B