Solution:# Robert Southey (1774-1843)
# Charles Lamb (1775 – 1834)
These two writers do not exclusively belong to the eighteenth century, and rest of all belong to the eighteenth century Robert Southey and Charles Lamb belong to the Romantic period.
Eighteenth century refers to literature (Poetry, drama, satire, essays and novels) produced in Europe during this period. Subgenres of the novel during the 18th century were the epistolary novel, the sentimental novel, histories, the gothic novel and the libertine novel.
Hence, option (d) is correct.