Who among the following is exclusively associated with diary writing in English?

Correct option is A

Samuel Pepys is the only one among the following who is exclusively associated with diary writing in English.
 Samuel Pepys was a 17th-century English naval administrator and politician who is best known for his diary, which he kept from 1660 to 1669. It is one of the most famous diaries in English literature and provides a detailed account of life in London during the Restoration period.
 The other options are not exclusively associated with diary writing in English:
o Virginia Woolf was a novelist, essayist, and critic who also wrote a diary, but she is better known for her fiction.
o Anaïs Nin was a French-American diarist, novelist, and essayist who wrote in both English and French.
o Anne Frank was a German-born Jewish diarist who wrote in Dutch.
Therefore, the correct answer is (a) Samuel Pepys.