It can be but you can support the theme with the characters thoughts and actions. You may also come up with a theme of your own.
B. if, what.
Reason because its the only one that uses proper grammar
1) think something without knowing the actual answer
2) running alongside or next to something else
3) to messily and hastily scatter something
4) sticking out
5) strange and unfamiliar
6) as a noun: a large densely packed crowd
As a verb: of a crowd to pack themselves into place
7) to express disapproval of something or someone and criticise it
8) full of yearning or sad desire
9) having a calm, serious and proper manner that is worthy of respect
10) completely fascinated and fully absorbed in something one is seeing or hearing
Answer:
The degeneration of “earthly glory” is presented as inevitable in the poem, contrasting with the theme of salvation through faith in God. The wanderer vividly describes his loneliness and yearning for the bright days past, and concludes with an admonition to put faith in God, "in whom all stability dwells".
