Which of the following scenarios is most suitable for using a struct instead of a class?

When needing multiple inheritance.
When encapsulation and private members are vital.
When only simple data storage without methods is required.
When polymorphism is a primary concern.

In C++, both structs and classes can have member functions, inherit from others, and serve many of the same roles. The primary difference is the default access level (structs default to public; classes default to private). However, structs are conventionally used for simple data storage without associated behavior or methods.

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