Susan would like for her child to learn a second language. If she wants the child to be fluent in the second language, research suggests that she should begin instruction no later than age .

seven

Explanation:

Hello! The younger the child, the more facilities he will have to listen, become familiar, learn another language and become a bilingual child. This is due to the fact that in the first years of childhood certain fundamental areas of the brain develop in language learning.

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