Which of the following pairs is most closely associated with Broadway musicals?

While Cronyn and Tandy were a renowned acting couple known for their work in theater, television, and film, they are not primarily associated with Broadway musicals. Instead, they are more recognized for dramatic roles and contributions to the theater as actors rather than as composers or lyricists of musicals.

Marlowe and Jonson were significant playwrights of the Elizabethan era, primarily known for their contributions to drama rather than musicals. Their works, such as "Doctor Faustus" and "Volpone," belong to a different theatrical tradition and period, which does not include the musical genre.

Chekhov and Stanislavsky are renowned for their influence on modern theater and acting techniques, particularly in realism. However, they are not associated with Broadway musicals, as their focus was primarily on serious drama rather than the musical form.

Miller and Williams are celebrated playwrights known for their impactful dramas like "Death of a Salesman" and "A Streetcar Named Desire." While their works are pivotal in American theater, they do not contribute to the musical genre, which is the focus of the question.