When a new president takes office, which of the following may he or she refuse to honor?
a treaty approved by the senate
a ruling made by the supreme court
an executive agreement made by the previous president
a treaty ratified during the previous administration

an executive agreement made by the previous president.

Executive agreements are agreements made between the President of the United States and the head of government of another country, but that have not been ratified by the legislature in the way treaties are. These agreements are binding, but can be dissolved if a new president enters office. Moreover, a president cannot unilaterally enter into executive agreements on matters beyond his constitutional authority.

sorry

i do knot know this

b. martin luther king jr. wrote and spoke "i have a dream"

explanation:

i know this 100 percent is correct   b. is the best one. < 3