Answer:
This question refers to José Santos Chocano, and it can be translated to:
The principal characteristic of Chocano is:
its vibrant, bombastic Parnassian verses.
It is his agile and melodious prose.
It is his identification with the country's social problems.
It is his pedagogical attitude and his political vocation.
It is his chromatic and cosmopolitan poetry.
Chocano was considered a "modernist". His writting was knowed for being epic, grandilocuent and full of colour, so the correct option will be:
"its vibrant, bombastic Parnassian verses."
Or "sus versos parnasianos, vibrantes y grandilocuentes."