Final answer:
The adaptation of the Chinese writing system to Japanese resulted in heightened cultural exchange, an expanded vocabulary, and the development of diverse writing styles, which include a mixture of kanji and kana scripts.
Step-by-step explanation:
Three outcomes of the Chinese writing system being adapted to Japanese are heightened cultural exchange, expanded vocabulary, and diverse writing styles.
When the Japanese adapted the Chinese script, it facilitated cultural exchange due to the prestige of Chinese literature and scholarly tradition. With the introduction of Chinese characters, the Japanese vocabulary expanded significantly because Japanese incorporated Chinese words into their language. As the Chinese script could not fully represent the sounds of the Japanese language, this adaptation also led to the creation of new, more phonetically accurate writing systems - the kana scripts, which include both katakana and hiragana. These scripts allowed for the expression of native Japanese words, thus promoting diverse writing styles and providing a system that could more accurately depict spoken Japanese, leading to a mixture of kanji and kana in written Japanese.