the first model of the atom was developed through\n○ scientific experimentation and data analysis with water…

the first model of the atom was developed through\n○ scientific experimentation and data analysis with water vapor and gases.\n○ observation of the light emitted by elements when they are heated.\n○ thinking about the smallest particles of matter without experimenting.\n○ analyzing the effects of a magnet on the path of a cathode ray.
Answer
Answer:
thinking about the smallest particles of matter without experimenting.
Brief Explanation:
The first atomic model, by Democritus, was philosophical speculation without experiments. Other options involve later - era experimental methods not related to the first model.