Final answer:
The correct instruction to make the helloLabel visible is helloLabel.Visible = True.
Step-by-step explanation:
The correct instruction to make the helloLabel visible is helloLabel.Visible = True. This will change the visibility property of the helloLabel to be true, therefore making it visible. The other options given do not have the correct syntax or do not represent the correct property.
Learn more about Visibility of GUI elements