Step 1: Understanding the question.
Conservative plate boundaries are characterized by plates sliding past each other without creating or destroying crust. The most common structure at these boundaries is a transform fault.
Step 2: Analyzing the options.
(A) normal fault: A normal fault occurs where the crust is being pulled apart, which is not typical of conservative boundaries.
(B) growth fault: Growth faults are related to the development of sedimentary basins, not directly associated with plate boundaries.
(C) transform fault: Correct — Transform faults occur at conservative plate boundaries, where plates slide horizontally past each other.
(D) reverse fault: Reverse faults are associated with compressional boundaries, not conservative ones.
Step 3: Conclusion.
The correct answer is (C) transform fault, as transform faults are the primary feature of conservative plate boundaries.