C1-w2 assignment of programming

I have two problems here
First , i write diwn the answers for all questions and saved it, but when i submit the assignment 10%of answers only is submitted, while the rest is not received nor graded
Second, concerning the last question in assignment. I don’t know whete is the mistake in my answers, when i check it, the application said i have two answers true and two false
I need to know the correct answer please
Thank you

Hello @mimi_ahmed,

First I would like to welcome you to our community!

Are you still facing issues? If so, please send me, privately, your notebook file, so I can check what is going on.