read "Existentialism is a Humanism:" https://www.marxists.org/reference/archive/sartre/works/exist/sartre.htm

Answer: What is Sartre's conception of the self? (think 100-200ish words, think in terms of the debate about moral responsibility raised by Strawson. Both have similar starting points, but draw very different conclusions)

after you read the article you may want to check out this powerpoint about Sartre, then re-read the article.