Which action is prohibited regarding the ERJ passenger door?

Opening the door from the inside of the ERJ is prohibited because it poses significant safety risks. The design of passenger doors on aircraft typically includes mechanisms that prevent the door from being opened while the aircraft is in certain conditions, such as pressurized flight or during taxi. Allowing the door to be opened from the inside could lead to unauthorized access, potential injury to passengers or crew, and a loss of cabin pressure if it occurs in flight.

The other actions, while they may also have restrictions or guidelines, do not carry the same inherent risks associated with the possibility of individuals inside the aircraft opening the door, which could compromise both safety and security protocols. Understanding these protocols ensures safe operation and maintains the integrity of cabin operations.