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 meaning it's pointless to worry about or dwell on things that have already happened and can't be changed. Laura uses this idiom to convey to her daughters that they shouldn't focus on what can't be altered. The first option is incorrect as the excerpt doesn't mention her mistakes for them to learn from. The third and fourth options are incorrect as the excerpt isn't about inventing or patenting things.

Answer:

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