Question

When President Nixon finally turned over all the Watergate tapes to the special prosecutor, the tapes
revealed that Nixon had no knowledge of the break-in.
contained an important, unexplained gap of eighteen-and-a-half minutes.
showed that Nixon’s right to “executive privilege” had been violated.
did not incriminate Nixon because the tapes were impossible to understand.

Answer 1

contained an important, unexplained gap of eighteen-and-a-half minutes.

When the White House tapes were turned over, one tape of a June 20, 1972 conversation had an 18½-minute erasure in the middle of a discussion between Nixon and H.R. Haldeman. The gap suggested possible tampering (Rose Mary Woods later claimed she accidentally erased it, but her explanation was widely doubted).