A. Arabic
B. English
C. Mandarin
D. Spanish

Mandarin Chinese, the most commonly spoken language in the world. Nearly 1.2 billion people (around 16% of the world’s population) speak some form of Chinese as their first language. The varieties of Chinese are usually described by native speakers as dialects of a single Chinese language, but linguists note that they are as diverse as a language family.

The world’s most widely spoken languages by number of native speakers and as a second language, according to figures from UNESCO (The United Nations’ Educational, Scientific and Cultural Organization), are: Mandarin Chinese, English, Spanish, Hindi, Arabic, Bengali, Russian, Portuguese, Japanese, German and French.

There are roughly 6,500 spoken languages in the world today. However, about 2,000 of those languages have fewer than 1,000 speakers. The most popular language in the world is Mandarin Chinese. There are 1,213,000,000 people in the world that speak that language.