Your sibling accidentally broke your favourite vase. Which of the following idioms might you use to tell them not to worry about it?

Correct option is A

Option (a) is the correct meaning of the given idiom.
Given Idiom: "Don’t cry over spilt milk" means not to be upset about things that have already happened and cannot be changed. (Hindi: जो हो गया, सो हो गया, चिंता मत करो)
Example: Even though you broke the vase, don’t cry over spilt milk.
Other related idioms: "Water under the bridge" implies that past problems or events should no longer cause concern.