What is the purpose of logical operators in a code?

Question: In quantum error correction, what do logical operators act on? A) The physical refrigerator B) The classical optimizer only C) The encoded logical information without leaving the code space D) The number of shots in the experiment Correct: C Explanation: Logical operators implement operations on the encoded qubit rather than on a single physical qubit. They preserve the encoded structure while transforming the logical quantum information. Topic: quantum computing / logical operators / error correction