Final answer:
Truman's Fair Deal aimed primarily at elevating the working class alongside advancing civil rights for African Americans and improving the overall American standard of living post-WWII.
Step-by-step explanation:
Truman's Fair Deal focused most concertedly on elevating the working class segment of society. This comprehensive program aimed to improve wages, housing, healthcare, and ensure the protection of the rights of African Americans. The Fair Deal attempted to extend the benefits of the economic prosperity seen during WWII to the broader American public while also specifically addressing civil rights issues through the desegregation of the armed forces and the establishment of the Presidential Committee on Civil Rights.