Please answer the following question by reasoning step-by-step.
Why are guns not allowed in some areas?\nOptions:\n- bad\n- gun free zone\n- very dangerous\n- deadly in wrong hands\n- semiautomatic

very dangerous
Guns are weapons what shoots bullets out of them.

Bullets can penetrate people's bodies and kill them.

Something that can kill someone is very dangerous.

.

Therefore, the answer is very dangerous