I’m guessing SURVIVAL because ancestors wouldn’t make sense since the question says they won’t have to focus on finding food.
Because there is no science that supports the claim that there are <span>special sunglasses that allow differing amounts of light to the left or right eye and thereby helping to treat mood disorders</span><span>, these special sunglasses demonstrate the principle of </span>extraordinary claims. Extraordinary evidence is required in order this statement to be true and proofed.
Explanation:
John F. Kennedy's speech had a significant impact mainly on young voters, as the president was assertive in saying words that invited young people to work for the country, as there is a saying that young people are the future of the nation, so the the president's speech gave rise to a vision of hope, unity and integration in young people, which brings a feeling of patriotism across the country and the freedom to pursue dreams through the work and joint action of the people and especially the young people to build a country worthy and fair for all.