I believe the correct answer is - Why do the characters feel the way they feel? By asking this question, you will have to analyze the text in order to see what caused these characters to start having these feelings they are currently having. The other options do not ask such informed questions or demand an in-depth analysis.
I would say D but that's just because I already know the definition of automation is the use of largely automatic equipment in a system of manufacturing or other production process.
