What is NOT a physical security measure for your home?

Question

Question: What is NOT a physical security measure for your home?

Options:

1.  Changing locks to ensure key control
2.  Confirming that a cleaning company is reliable and licensed
3.  Having good relations with neighbors and looking out for each other
4.  Hiding a key outside to ensure family members can get in if they lose their keys

Answer 1

Hiding a key outside to ensure family members can get in if they lose their keys

'Hiding a key outside to ensure family members can get in if they lose their keys' is  NOT  a physical security measure for your home.