The correct answer to this open question is the following.
Although the question does not provide options, we can answer the following.
Great Society programs were effective in addressing the causes and effects of poverty in the United States during the 1960s in that President Jonson's administration made a great effort to improve the conditions of millions of Americans who were living in poverty, offering them programs to attend college, loans to businessmen to hire new workers, and support American farmers. With the introduction of the Office of Economic Opportunity in March 1964, President Jhonson showed his true intention to offer some relief and he went beyond, also creating health legislation such as Medicaid and Medicare.