Final answer:
Helen Keller is most notably known for her role as a public advocate for the deaf and blind, in addition to her accomplishments as an author and a lecturer.
Step-by-step explanation:
The achievement that is associated with Helen Keller from the provided options is 'Advocate for the deaf and blind, author, and lecturer'. Helen Keller was an American author, political activist, and a lecturer, and she was the first deaf-blind person to earn a Bachelor of Arts degree. Her accomplishments as an advocate for the deaf and blind are widely recognized, and she utilized her experiences and public platform to improve the lives and conditions of those facing similar challenges.
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