A biography can contain almost anything about a person- Their entire life, or just one key event... Most biographies, regardless of their length and target audience, will provide basic facts like the time and place in which the person lived.
Its C because the scientist ended what he had to say
This is a question based on exploring cultural identity, and based on the excerpt that is attached to this question, the type of rhetoric that is used in order to persuade the readers the accuracy of Anaya's conclusion is an appeal that is based on the characters of the author. Hope this helps.