Romanticism did what literary movements usually do: it ruptured with the previous movement, as if reacting to it. That's why option C is not correct. Romanticism did not keep the traditional forms of writing of the Neo-Classical era.
As for the language, Romanticism chose common language as a way of expressing individuality. The movement revolves around subjectivity and individualism, expressed freely and emotionally. So, option D is incorrect.
Although many poets might have written about faraway places, that does not seem to be the correct alternative as well. During this movement, poets focused on nature, showing great interest for rural, pastoral life. So, it was common to have the countryside, the ocean and islands as settings for the stories. If they were far away or not, that was incidental. Option A is, thus, incorrect.
The best option is B: they wrote about love and relationships. Since subjectivity and emotion were highly valued during this movement, it was natural that love should always be addressed and given ultimate importance. The idealization of women was a crucial characteristic of Romanticism, as was suffering and dying for love.
