Worried that the RMS Titanic is rusting away at the bottom of the ocean, Robert Ballard wants to repaint it. Ballard, who first discovered the wrecked ship in 1985, doesn't want to restore the ship completely. Instead, he wants to put a protective layer of special paint on the ship. Currently, large patches of rust are growing on it. If left untreated, the Titanic could fall apart. Ballard believes painting the ship could delay its destruction for decades. The process would involve special robots currently used to paint supertankers. But the job would be expensive, and officials have yet to determine who would actually pay for it.
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Ballard wants to _________ the ship.
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A preserve
B employ
C promote
D submerge