You are presented with the quiz "Model rocketry can be used to study how people are what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "transportation technology is used for moving people" and "model rocketry is an exciting way to study transportation technology". So, what's the best answer to the question?

Available choices: (i). able to read; (ii). warm; (iii). dead; (iv). living; (v). moved; (vi). born; (vii). humans; (viii). moved by emotion;
Answer:
(v).