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Museums began collecting rock-crystal skulls during the second half of the nineteenth century, when no scientific archaeological excavations had been ---- in Mexico and knowledge of real pre-Columbian artifacts was scarce.A) unearthedB) excavatedC) repentedD) extinguishedE) undertaken
Museums began collecting rock-crystal skulls during the second half of the nineteenth century, when no scientific archaeological excavations had been ---- in Mexico and knowledge of real pre-Columbian artifacts was scarce.
A) unearthed
B) excavated
C) repented
D) extinguished
E) undertaken
