How were the reigns of James I and Charles I different from those of the Tudors before them?

A.
James I and Charles I clashed with Parliament.

B.
James I and Charles I eliminated heavy taxes.

C.
James I and Charles I supported the Protestants.

D.
James I and Charles I did not believe in the divine right of kings.

A. James I and Charles I clashed with Parliament.

This is the main difference between the reigns of James I and Charles I as compared to the Tudors before them. James I and Charles I attempted to rule without the cooperation of Parliament, while the Tudors used Parliament more frequently to help govern. This eventually led to unsettled times, including the English Civil War, which resulted in the execution of Charles I.