The correct answer to this open question is the following.
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What best explains how factors in Emerson's early life influenced his career choices is the following.
Ralph Waldo Emerson early life lessons taught him to be perseverant and to trust in his thoughts and beliefs, Indeed, that is why he expresses in the famous essay "Self-Reliance."
The early life experiences that affected his career choices were the death of his father, the influence of his aunt Mary Moody Emerson, and his health problems.
That is why in his influential essay titled "Self-Reliance," Emerson invites his readers to be perseverant and always listen to the inner voice to overcome self-doubt.