On and under are grammatically correct the other 2 are questionable
Amy stands up against bullying, doesn't she?
There are quite a few English words that contain letters that are not suppose to be said including: debt and write. These left out letters can often tell us about the history and origin of the word and some places in the world has these which can tell us about who lived there at the time. This is called etymology.
Hope that this answer helped. ☺
Answer:What important ideas does the text include?
What text structure does the author use?
How effective is the text structure in sharing the important ideas?
Explanation: