Correct Response: D. The scaled-down replica of San Francisco Bay is a physical model that the oceanographers use to investigate how the real San Francisco Bay may respond to a tsunami. Reconstructing habitat based on geologic clues (A) does not involve the use of a physical model and the correlation of sunspot data with past weather to make predictions about future weather (B) also does not involve the use of a physical model. Measuring the characteristics of seismic waves to locate fossil fuel deposits also (C) does not involve a physical model as it is an analysis of real-world phenomena.
