It can help to go over the main ideas or important moments of the story and then see what those are portraying, whether there is a lesson or not. you can also look at the ideas of the characters and what they are thinking to determine the theme.
That means like oxygen for like breathing in your mouth
I believe the correct answer among the choices listed above is the first option. Glaciers has shaped much of the landscape along the North European Plain. This part of Europe includes Poland, Germany and Netherlands.