The question is incomplete. The complete question is:
Special relativity cannot be used to study an object in which frame of reference?
A. A frame of reference that has no change in velocity
B. A frame of reference that is moving in a circle
C. A frame of reference that has a constant, positive acceleration
D. A frame of reference that has a constant, negative acceleration
Answer:
A frame of reference that has a constant, positive acceleration
A frame of reference that has a constant, negative acceleration
Step-by-step explanation:
Special relativity applies to frames of reference in which an object is moving at constant velocity.
If the velocity is constant, it implies that acceleration will be zero hence options C and D will be correct since they both involve a non-zero change in velocity.