The correct option is CHINESE.
Chinese is the most spoken language in the world and it always comes on top of the list of the most common languages in the world. Although the language has many dialects, but put together, about 1.2 billion native speakers speak Chinese language. Mandarin is the most common dialect of the Chinese language.
I had begun by tracing the Japanese characters with a pencil.
*begun is a past participle
Martin Luther King dedicated his life to love and to justice for his fellow human beings, and he died because of that effort.