Answer: d) Employees have considerable legal protection against surveillance.
Explanation:
According to the situation described in the question, for finding those employees who are stealing money from the bank , bank can set up cameras to observe their activities with informing them.
Bank can also observe the use of internet done by employee on bank monitors to know about their activity on internet and tracking any suspicious event.Bank can also read employees emails to know about the sources from where they are sending an receiving the mails from.
The only incorrect step would be employees taking lawful protection from getting surveillanced as this would not help in tracing the culprit of stealing money.
This the correct option is option(d).
