Why does the author call Richard Brune’s method “less destructive” than actually knocking over rocks (line 193)? *

Richard found less destructive ways to pull on rocks. He used a camera to take photographs from all sides of refrigerator-sized boulder.

Explanation:

In California, Richard wanted to discover how hard balanced rocks are to knock over. He used a steel cable and a gadget to measure exactly how much pulling was needed to bring down the boulder. Richard found less destructive ways to pull on rocks. He used a camera to take photographs from all sides of the refrigerator-sized boulder.

Then he used the computer to stitch the pictures into a three-dimensional model of the rock. Using this virtual rock, he concluded that the real rock would stay standing for another 18,000 years.

So, the author calls Richard Brune’s method “less destructive” than actually knocking over rocks.

introduce and provide context for each quotation

hope this

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i think it may be b, i'm not exactly too sure on this. but b seems to make more sense.