Keller’s reason for writing "optimism” is called her claim. counterclaim. evidence. purpose.

Purpose

Helen Keller (June 27, 1880–June 1, 1968) was a woman who grew up without sight and hearing. With the help of her teacher Annie Sullivan, she learned to speak, read and write. She wrote for timeless work on optimism as a philosophy of life. Simply titled "Optimism" it was originally published in 1903. About her poem she said “Doubt and mistrust are the mere panic of timid imagination, which the steadfast heart will conquer, and the large mind transcend.”

the answer is purpose. D

just add on too that

explanation:

each year on march 8, international women’s day is celebrated around the globe. it’s an important opportunity to shine a spotlight on women’s involvement, contributions, and accomplishments on a range of issues from domestic violence to the role of women in the c-suite. the theme this year is “be bold for change”― a dictum that those who know me personally will acknowledge has pretty much been my mantra throughout my career on wall street, in media and most recently, in philanthropy.the empowerment of girls as leaders, who can be emboldened today to become even stronger leaders tomorrow, is an increasingly recognized imperative in our world, and it couldn’t be closer to my heart