The answer is A. 1000g equals to 1 kg.
In addition, liters (L) does not convert to g. One is weight and the other is volume.
And mm does not convert to ml too. One is length and the other is volume.
B. has undergone many changes
Thank you for posting your question here at brainly!~ To answer shortly I'd say the most important reason that Indo-European languages dominate the globe geographically today is because of "B. European colonization around the world helped spread the languages." Hope I helped!~ Brainliest appreciated.