Final answer:
Belinda's rage over the stolen lock is justified, but her response is excessive.
Step-by-step explanation:
Belinda's rage over the stolen lock can be seen as justified, but her response is excessive. In the text, it is mentioned that the lock was of great significance to her, which could justify her anger (option a). However, her excessive response, which includes physically assaulting the thief and causing a scene, could be seen as disproportionate to the situation (option c). Therefore, while her rage may be justified, her response is excessive.