After the 1964 election, President Johnson believed that
his stance on the Civil Rights Act had been a mistake
he had public support to continue his social programs
he would never be able to win political office again.
the public no longer cared about Kennedy's legacy.

he had public support to continue his social programs

Explanation:

After the 1964 election, President Lyndon. B. Johnson, conducted several programs to alleviate poverty and revive the downtrodden from the American society, during his tenure, however, was increasing effect of cold war, and vietnam war, which made public support for Johnson declined as the war dragged on and domestic unrest across the nation increased.

However, he belived that, the public supports him to keep going with the social programs, such as War on Poverty, Voting right acts, medicare and medicaid, education, transportation etc.

B

Explanation:

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