Which boldfaced option is correct int he following?
Zhang and his team reportedly concocted the revolutionary ooze by mixing neodymium magnet particles with household detergent borax and the resin polyvinyl alcohol, the first ingredient so (that) it can be controlled magnetically, Reuters reported. They then coated the toxic magnetic particles with silica to hypothetically make them safe for use inside the human body.
Zhang and his team reportedly concocted the revolutionary ooze by mixing neodymium magnet particles with household detergent borax and the resin polyvinyl alcohol, the first ingredient such that it can be controlled magnetically, Reuters reported. They then coated the toxic magnetic particles with silica to hypothetically make them safe for use inside the human body.