A student has taken the following notes:
·A team of researchers led by Guanning Pang discovered that inactive volcanoes in the Cascade Range have large underground magma crambers 3 to 9 miles below their surface.
·Some of these volcanoes have been dormant for thousands of years.
·Researchers detected magma by tracking earthquake waves that slowed down when passing through chambers of magma consisting of 3% to 32% melted rock.
·Magma chambers need over 35% liquid rock to potentially erupt.
·These findings challenge the scientific theory that magma chambers only exist right before eruptions.
·The discovery could improve volcano monitoring and eruption prediction methods.
A student wants to undermine a scientific assumption about magma chambers. Which choice most effectively uses relevant information from the notes to accomplish this goal?