Answer:
He promised federal funding for school desegregation.
Step-by-step explanation:
President John F. Kennedy was the 35th President of the U.S. who took on the office on 20th January 1961. He was the youngest president to be elected and to die.
After becoming President, he spoke openly in favor of school desegregation. He promised to support the school desegregation by federal funding. Though his presidentship was for a short period, because of his assassination in 1963, but after his death, a Civil Rights Act was passed in honor of him in which school desegregation was illegalized.
So, the correct answer is the third option.