Which of these is not among the fundamental principles of roman catholicism. a-worshipping the holy trinity b -recognizing the roman emperor's authority c-attending mass weekly d-performing seven sacraments

The answer is B. Recognizing the Roman Emperors authority
The church of the roman catholicism indeed advice the follower to maintain a good relationship with the Government.
But as for authority, they are required only to recognize the Authority of their God's teachings that being impeached by the churches.