Establishing Coordinated Universal Time (UTC) is no easy task. Each month, readings of a single second from atomic clocks around the world are taken and sent to the International Bureau of Weights and Measures (BIPM) in France.
_________ BIPM metrologists perform the meticulous work of assembling these minutely disparate readings into a globally shared time standard.
Which choice completes the text with the most logical transition?
Difficulty: Medium
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