Answer :
The technological advancement that most strongly affected a leader's speech during President Kennedy's tenure is:
Radio (Option D)
Who is President Kennedy?
President Kennedy whose full names are John Fitzgerald Kennedy was an American politician. He served as the 35th president of the United States from 1961.
Many of his speeches were given over the Radio.
Learn more about President Kennedy at:
https://brainly.com/question/21223104
Answer: A television
Explanation:It was was live on television