Which three of the following choices are effective calls to action?
write a letter to your school principal and demand healthier lunch options!
if people were kinder to one another, the world would be a happier place!
when people are willing to stand up for each other, we will see change!
put up signs, knock on doors, and tell everyone you know to get involved!
if animal rights are important to you, donate to our cause or adopt a pet now!

Put up signs, knock on doors, and tell everyone you know to get involved!

If animal rights are important to you, donate to our cause or adopt a pet now!

Write a letter to your school principal and demand healthier lunch options!

Explanation:

a compare and contrast essay is a piece of formal writing in which the author focus on the similarities between two ideas, objects, places, etc., and the differences between them. there are some aspects that the author should take into account when he/she is crafting the essay. first, the author has a clear idea of the effect that he/she wants to produce on the audience (a purpose). his/her main idea should be presented in the thesis statement in a simple but effective way which gives the audience a clear idea of the content and the direction of the essay. in addition, it is also important to focus to the similarities and differences that not only are interesting and relevant to the reader but also provide a new, impressive point of view or deeper understanding of a topic.