Correct Answer (Detailed Explanation is Below)
C.
Delete is used to delete single object whereas delete[] is used to delete multiple (array/pointer of) objects
Detailed Explanation
Answer: Delete is used to delete single object whereas delete[] is used to delete multiple array objects
In C++, delete is normally used for memory allocated for a single object using new.
delete[] is used when memory was allocated for an array using new[].
For example:
int *p = new int;
delete p;
For an array:
int *a = new int[5];
delete[] a;