Answer:
B. The two sections have different rhyme schemes and the same meter.
Explanation:
When you arrange properly the poems that Colin is comparing, you can see that the rhyme scheme in the first one is ABAB and in the second one it is ABBA, so they have different rhyme schemes, but as they both are sonnets they have to have the same meter, so they share the same iambic pentameter that has 10 syllables per verse.
Here the arranged poems with their rhyme scheme:
Never did sun more beautifully steep A
In his first splendour, valley, rock, or hill; B
Ne'er saw I, never felt, a calm so deep! A
The river glideth at his own sweet will… B
Much have I traveled in the realms of gold,A
And many goodly states and kingdoms seen;B
Round many western islands have I been B
Which bards in fealty to Apollo hold… A