Per the 25th Amendment, when the president becomes temporarily disabled, __________.
a. the vice president automatically assumes the presidency
b. Congress must vote to decide whether or not the vice president should assume the presidency
c. he or she must submit a letter to Congress notifying them that he or she has appointed a cabinet-level official to the presidency
d. he or she must submit a letter to Congress advising of the temporary condition before the vice president assumes the presidency