An adult because they could Learn some things quicker or they might already know the language because maybe they were born and that is their fluent language along with english.
<h2>At what age do you learn to speak?
</h2><h2>Explanation: The ability to learn a new language, at least grammatically, is strongest until the age of 18 after which there is a precipitous decline. To become completely fluent, however, learning should start before the age of 10.</h2><h2>i hope this helps</h2>
