Mandarin Chinese speakers are found a
primarily in China
b
on all continents and is quickly becoming the most learned global language
c
throughout all of Asia, but primarily in the southern region
d
evenly distributed throughout the world

C

Explanation:

Mandarin is by far the largest of the seven or ten Chinese dialect groups, spoken by 70 percent of all Chinese speakers over a large geographical area, stretching from Yunnan in the southwest to Xinjiang in the northwest and Heilongjiang in the northeast. Most of Northern and Southwestern China.

the answer is a. 250 percent.

i am not 100% positive but i think it is is b. both are non-partisan jobs

i am pretty sure that members of congress have term limits, can be impeached, and are nominated through direct popular vote.