How many years does it typically take to reach near native level of speech in the Advanced Fluency stage of second language acquisition?

Reaching near-native level of speech in the Advanced Fluency stage of second language acquisition typically takes about 5 to 7 years. During this period, learners become capable of using the language with a high degree of proficiency, integrating complex structures and idiomatic expressions while also developing an intuitive sense of cultural nuances. This time frame allows for the immersion and sustained practice necessary for grappling with the subtleties and variations of the language, as well as the phonetic and grammatical intricacies that resemble those of a native speaker.

The other options suggest time frames that either under or overestimate the typical duration for achieving this level of fluency.