Who among the following is the most likely to learn to speak a new language just as fluently as a native speaker

When it comes to learning a new language and achieving fluency comparable to that of a native speaker, several factors come into play. Generally, younger individuals, particularly children, have a greater capacity for language acquisition. This is due to the heightened plasticity of their brains, which allows them to absorb new sounds and structures more effectively.

Additionally, individuals who have had prior exposure to similar languages may find it easier to pick up a new language because they can draw parallels between the languages, facilitating the learning process. Furthermore, those who are immersed in an environment where the new language is spoken, such as living in a country where that language is the primary mode of communication, also tend to achieve fluency more quickly.

In summary, the most likely candidates for becoming fluent in a new language, akin to a native speaker, would be young children, individuals with exposure to similar languages, and those in immersive environments.