The word “noughties” refer to

A. to add noise to produce distortion
B. a decade from 2000 to 2009
C. to free (something) from a constraint
D. a speech sound pronounced with the vocal muscles

Noughties | the first period of a 10 year of a century

The first decade of a century: from 1900 to 1909, 2000 to 2009, etc.