For each blank select one entry from the corresponding column of choices. Fill all blanks in the way that best completes the text.

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.