Who was the president of the United States at this time and what was his response to Governor Wallace's action later that night (to the American people) as the events of the day?

President Kennedy

Explanation:

Governor Wallace created a controversy in 1963, after he stand in front of school admissions to prevent African American students from entering what supposed to be "White only schools".

As a response, President Kennedy ordered the National Guard to force Wallace to step aside to the African American Students can get in.

Later at night, Kennedy told the American people about how he feels about the situation. He mentioned that many Americans consider this country to be the land of the free, and yet they did not give the same sentiment to the African American people.

the answer is b. 300t + 3/2xt

d) all choices are correct