Demolish, it’s looking for the opposite
Answer:
d. Her school.
Explanation
She might have not started school. That's why. You can't have your imaginary class in bedrooms, dining rooms and other places.
Hope this helps......
Efficient means someone who is working in a well-organized way and plans things well. So think of what a character would do being "well-organized" "well-planned" ...etc.
Winter is fast approaching = indicative
hope I helped !
