Question

read the excerpt from \daughter of invention\.
\¡ya, ya!\ she waved them out of her room at last. \there is no use trying to drink spilt milk, thats for sure.\
what does laura mean to express to her daughters?
she wants her daughters to learn from her mistakes.
she does not want to dwell on something that cannot be changed.
she intends to invent many more useful things she can patent.
she wishes that she had been the one to patent the suitcase with wheels.

Explanation:

The phrase "There is no use trying to drink spilt milk" is an idiom. It means that it is pointless to worry about or dwell on something that has already happened and cannot be changed. Laura is using this idiom to convey a message to her daughters.

Answer:

She does not want to dwell on something that cannot be changed.