Under whose presidency was PEN (an international association of poets, playwrights, editors, essayists and novelists) founded by Mrs. Dawson-Scott in 1921?

The correct option is John Galsworthy.

Explanation:
PEN International (originally known as the PEN Club) was founded in London on October 5, 1921, by the English writer, poet, and activist Catherine Amy Dawson Scott (Mrs. Dawson-Scott). The acronym PEN stands for Poets, Essayists, and Novelists (later expanded to include Playwrights and Editors). The association was created to promote friendship and intellectual cooperation among writers worldwide, emphasizing the role of literature in developing mutual understanding and defending freedom of expression.

To establish the prestige and reach of the newly formed club, Mrs. Dawson-Scott invited the prominent English novelist and playwright John Galsworthy to serve as its first President. Galsworthy, best known for his masterpiece The Forsyte Saga (and who would later win the Nobel Prize in Literature in 1932), accepted the role and served as president until his death in 1933. Under his leadership, the organization grew internationally, establishing chapters in several countries.

While the other options (T.S. Eliot, W.B. Yeats, and Ezra Pound) were highly influential literary figures of the 20th century, none of them served as the founding president of PEN in 1921.