Which of mary stuart’s conspirators devised the plot to murder her cousin who

With John Ballard's support Anthony Babington.

Explanation:

Mary Stuart's plotters who, with John Ballard's help, formulated the plan to kill her cousin Babington.  

The key plotters behind the Babington plot to kill England's Queen Elizabeth I in 1586 was Anthony Babington, with the help of John Ballard.

The scheme has been uncovered by a Queen Elizabeth's lawyer called her chief secretary, Sir Francis Walsingham.

He became regarded as the "Spymaster." Thomas Phelippes, a cryptanalyst, deciphered the document sent out to Mary by the Babington on 7 July 1586.

profound political, administrative, and social changes in the british isles.

c. more people could read and interpret the bible for themselves