Answer:
The option which best summarizes the central idea of the excerpt is:
Non standard forms of English are valid
Step-by-step explanation:
This is an excerpt from Mother Tongue.
Mother tongue is the very first language or the native language of an individual that he or she learns from childhood.
The central idea of the excerpt suggests that no matter how different a person’s English Language sounds, it still remains valid and that all forms of English Language are meaningful.
Here, the speaker speaks up about her mother’s English Language to support the idea that it is her truest form of expression, and that it was the language that first made sense to her and helped her interpret the world.