The answer to your question is the first choice, alliteration.
The repitition from the words that begin with the letter "a" (An, Austrian, array, awfully, arrayed, and boldly) use alliteration as well as repeating the words that begin with the letter "b" (boldly, by, battery, and besieged Belgrade), and the same thing with the letters "c" and "d."
1 is alliteration.
2 is onomatopoeia.
3 is personification.
Through water sources like rivers or oceans
You should add a comma after an adverb in the beginning of the sentence.
Ex. Fortunately, he made it in time.
Hurriedly, she rushed to the station.
Hope this helps :)
