Test and analysis: Life is tenacious and fragile. Sometimes, a careless move may cause harm to a life. There are also many unexpected unfortunate events in life that have hurt countless lives. If we want to live in a colorful world, we need everyone to care about the life around us, especially the rare wild animals and plants, because they are friends who live with us in our home on earth. If we take it at will and don't know how to protect it, we will naturally be punished. That's what Engels emphasized in this famous saying, so option C is the correct answer. The other three options are misunderstandings of this famous saying and should be ruled out.

Comments: This topic takes famous sayings as the topic, examines students' understanding of relevant knowledge points in the textbook, and embodies the humanistic characteristics of ideological and moral character. The accurate answer to this question needs to be based on the correct understanding of the famous sayings in the background materials, so practicing this kind of questions often can improve students' understanding and analysis ability.