When you create a derived class and instantiate on object

The correct answer is: A. the parent class object must

When you create a derived class, the parent class object is always constructed first. This is because the derived class inherits from the parent class,

Here is an example:

“`class Parent {
public:
Parent() {
cout << “Parent constructor called” << endl;
}
};

class Child : public Parent {
public:
Child() {
cout << “Child constructor called” << endl;
}
};

int main() {
Child c;
return 0;
}
“`

In this example, the Parent constructor is called first, followed by the Child constructor. This is because the Child constructor inherits from the Parent constructor.

I hope this helps!