What is the "absolute privilege" to which this decision refers?

a. the right of president nixon to bomb cambodia without congressional approval.
b. the right of president nixon to withhold tapes of his private phone conversations
c. the right of president nixon to withhold evidence of crimes by spiro agnew
d. the right of president nixon to break into democratic headquarters in 1972

The good choice is:

B. the right of President Nixon to withhold tapes of his private phone conversations.

Explanation:

President Richard Nixon was not willing to allow public access to the recordings of his private conversations on the phone or in the White House during some part of the Watergate scandal that shook his administration in 1972-1974. When the case reached the Supreme Court, the highest tribunal ordered the White House to disclose Nixon´s secret tapes. Nixon resigned on August 9, 1974.

for your : )