When considering the gothic tradition in literary production alone, when does it emerge most predominantly?

During the 18th century or during the Romantic period.

Explanation:

While the concept of Gothic elements began as early as the 4th century, the literary impact was seen only from the 18th century, during the Romantic period. While the earlier and initial influences were mainly in the architecture and art forms, literary production on this tradition came after more than a decade of its inception.

The Romantics was a period of imaginative and emotional influences into literary works. Writers of this period focus on the individual's emotions and feelings, And in this period of influence, the themes of Romanticism but in a darker way began to be explored, leading to the Gothic literary genre.

Thus, the gothic tradition in literary production alone emerges most predominantly during the 18th century or the Romantic period.