Final answer:
It is false that an object must be created when its object reference variable is declared; declaration and instantiation can occur separately.
Step-by-step explanation:
The statement that 'An object must be created when its object reference variable is declared' is false. In programming, particularly in object-oriented languages, it is common to declare an object reference variable without immediately assigning it an object. This means that the variable merely has the potential to refer to an object and can be initialized with an object at a later time. For instance, in Java, you can declare a variable of a class without actually creating an object with the new keyword. The actual creation of the object can happen at some point after the declaration if at all.