question: Ptolemy was an ancient astronomer who thought Earth was the center of the universe. When he made observations that were inconsistent with this, he proposed a phenomenon called "epicycles" to explain the observations. How was Ptolemy's process similar to the modern scientific process?
choices.text: Ptolemy based his model partly on a belief system. Observations inspired Ptolemy to modify his explanations. Ptolemy tried to describe the universe instead of explaining it. Experiments were the basis of Ptolemy's model of the universe.
choices.label: A B C D