Mashaal Masha
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
A: 

There,

B: 

In particular,

C: 

For example,

D: 

Conversely,

Sponsored Ads