Final answer:
Validation of object-oriented software focuses on more than just user visible actions and outputs from the system.
Step-by-step explanation:
The statement is False. Validation of object-oriented software focuses on more than just user visible actions and outputs from the system.
Validation of object-oriented software includes checking that all the classes, objects, and relationships defined in the design are correctly implemented and behave as intended. This involves verifying that the software meets its functional and non-functional requirements, performs as expected, and is free from defects. User visible actions and outputs are part of the validation process, but not the only focus.