Question

"The main idea of the cartoon is that President Barack Obama

(1)is determined to end President Lyndon B. Johnson’s foreign policy commitments
(2)is better prepared than President Lyndon B. Johnson to lead the nation in war
(3)should learn from President Lyndon B. Johnson’s failure in Vietnam
(4)should follow the advice of President Lyndon B. Johnson"

Answer 1

(3) should learn from President Lyndon B. Johnson’s failure in Vietnam

Answer 2

If I understand it correctly, the main idea of the cartoon is that President Barack Obama (3) should learn from President Lyndon B. Johnson’s failure in Vietnam