GRE General Test: TC-929158 GRE Text Completion

Eager for precision in a field (i)_____ ambiguity and frustration and determined at all costs to find answers to (ii)_____ questions of provenance, curators of major museums have long used the methods of nuclear science—neutron activation analysis, accelerator mass spectrometry, proton-induced X-ray emissions—to analyze ancient artworks.
Blank (i)
Blank (ii)