Multi-select problem: How does the next paragraph end?

How to avoid getting into a dangerous situation
Keep strangers out of your home.
Perhaps the most fundamental rule in avoiding danger is not letting strangers into your personal space. Though most people are harmless, the only way to assess this fact is time.

Select from the following.
(a). By not allowing strangers into your home, you are compromising your privacy and making your space more toxic. Keep your windows down and doors locked with the blinds pulled up..
(b). If others pass you in the hallways, by all means intervene. If you see someone out in the hallway, even if they stand calmly by the door, intervene and politely tell them to go outside..
(c). You should avoid letting anyone into your home or car who you do not know. By controlling who does and does not enter your home, you can further assure your safety..
(d). By letting strangers into your home, you may be allowed to interact with them and your conversation may become less awkward. If a potential stranger comes into the house where you are staying, know what they are looking for..
(c).