Final answer:
A cell phone must be placed in a Faraday bag immediately after seizure to prevent any remote interference that could compromise the data, which is crucial for preserving digital evidence.
Step-by-step explanation:
The item that must be placed in a Faraday bag immediately after seizure is D. Cell phone. A Faraday bag is specially designed to block electromagnetic fields and prevent signals from entering or exiting the device. This is crucial for evidence preservation in a digital forensics scenario to avoid remote wiping or alteration of the data on the cell phone. Once a cell phone is seized, it is vulnerable to remote access or commands that could compromise the data integrity. By placing it in a Faraday bag, investigators ensure that the device remains in its seized state without any interference.