Which of the following describes how Marie Tharp and Bruce Heezen found evidence that led to the theory of plate tectonigs? (1 point)

• They mapped the structures on the ocean floor using a video recording to collect data.
• They observed two tectonic plates moving away from each other.

None of the options accurately describe how Marie Tharp and Bruce Heezen found evidence that led to the theory of plate tectonics. Marie Tharp and Bruce Heezen used sonar technology and collected data from mapping the structures on the ocean floor. This data helped them discover underwater mountain ranges and deep-sea trenches, which provided evidence for the theory of plate tectonics.