In which sentence in the comma in the correct place? O No one likes to fail, but it is important not to give up.
O Everyone can improve their mindset, and become more growth oriented with practice.
O Many people have a fixed mindset, they can change their mindset with effort and practice.
O People should focus on effort, it is through practice and hard work we have the greatest success.

so are we writing a song for you or are we making characters for you.

the book's theme is the moral ambiguity of the iranian revolution, history of middle eastern relations and the process of growing up during war. it sheds light on the stereotypical views of middle eastern culture and religion.

the author explicitly portrays the issues of class disparities and racism continously throught the whole novel.

the relationship between parents and childrens, the abandonment of faith, modernity vs fundamentalism and class conflict are the 4 main panels that this novel englobes.

hope this , if you would like me to be more specific about a specific excerpt let me know : )

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.