Along the narrow forest trail, ferns and tiny wildflowers grew. the other options don't have correct punctuation or grammar.
A poetic device used is alliteration. When multiple words in a sentence start with the same sound/letter to create a sort of rhythm, that is alliteration.
“HE HELD my HAND and said I will HIRE you with my power.”
Look at all the H’s!
I think undergraduates. I´m going to second guess myself and say alumni. Wait, I talked it over with myself and I think I wrote the right answer first. Lol, hope this helps.