The most damaging evidence against president nixon in the watergate impeachment proceedings was the

discovery of audio tapes of conversations connecting him in attempts to cover up details of the Watergate break-in.

because the recorded tapes were brought to the Watergate committee and that is what caused the most damage.

Hope that helped.

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services

answer; preliminary hearing/arraignment; (it is not booking);