The correct answer is B. Storm Thurmond.
Storm Thurmond was a great choice for this particular party, as he represented the discontent Southerners had with president Truman. Thurmond, a South Carolina governor, did not like Truman's national policies that forced social changes in the South. Thurmond though that issues such as civil rights legislation should be determined by states on an individual basis. Outside of the South, he did not have much success in the 1948 election.