The correct answer is “a single essay”
The Tatler was a British literary and society journal that begun by Richard Steele in 1709.
It was published for two years, it included cultivated essays on many contemporary matters. The periodical essay used to deal with morals and manners, it covered the two sides in two columns of a sheet. It was very popular because it was a new genre and it fitted the spirit of the age. Combined the tastes of different social classes readers.