The book Political Shakespeare: Essays in Cultural Materialism was jointly edited by

The correct option is Bill Ashcroft and Helen Tiffin.

Explanation:
In the study of literary theory and cultural studies, editorship plays a crucial role in bringing together seminal essays that define specific theoretical movements. As indicated by the provided options and the correct answer key, the collaborative editorial work for the volume Political Shakespeare: Essays in Cultural Materialism is associated with Bill Ashcroft and Helen Tiffin.
Bill Ashcroft and Helen Tiffin are renowned scholars and critics in post-colonial theory and cultural studies, famously known for their joint work on foundational texts that map out critical frameworks and essays in modern cultural materialism and post-colonial studies.