Answer:Based on my knowledge cutoff of 2021, the detail that is included in the Washington Post article about Nixon's resignation but not in his resignation speech is:
B. "Some members of Congress were upset when Nixon told them of his decision to resign."
This detail is not mentioned in Nixon's resignation speech, which was delivered on August 8, 1974. However, the Washington Post article about Nixon's resignation, which was published on August 9, 1974, reported that some members of Congress were upset when Nixon told them of his decision to resign.
Step-by-step explanation: