In context, the sentences “I have observed my own mother, a high school English teacher, bemoaning the fact that she had essays to grade. She sits in the sun room with pen in hand, diligently reading and marking student essays for hours past contracted work time” (paragraph 2) can best be understood as which part of the argument?

an argumentative essay presents objectively a topic and its main characteristics. besides, it states all this information and facts by giving authentic and substantiated proof to the audience. by contrast, a persuasive text purpose is to convince the audience about some facts by presenting them according to his/her emotions and feelings. the main purpose of a persuasive text is to convince the audience to agree with the author´s opinion. on the other hand, in the argumentative essay, the author leads the writer to recognize his/her point of view as the correct one.

very interesting story but where is the question what is actually a question i don't understand

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.