dynamic_cast is often used to Convert pointers to strings. Upcast pointers Perform type checking for objects. Downcast pointers.

The `dynamic_cast` operator in C++ is primarily used for: 1. **Downcasting pointers**: It allows you to safely convert a pointer or reference of a base class to a pointer or reference of a derived class. This is particularly useful in polymorphic class hierarchies where you want to access derived class members. 2. **Performing type checking for objects**: When using `dynamic_cast`, if the cast is not possible (for example, if the object is not of the derived type), it will return `nullptr` for pointers or throw a `std::bad_cast` exception for references. This provides a way to check the actual type of an object at runtime. So, the correct answers from your options are: - **Perform type checking for objects.** - **Downcast pointers.** `dynamic_cast` is not used to convert pointers to strings or to upcast pointers, as upcasting is safe and can be done implicitly without the need for `dynamic_cast`.