After an earthquake, there are certain things you can do to stay safe. Categorize each action as either safe or unsafe.
If you are
outside, head
indoors
immediately in
case another
earthquake hits
?
A safe action
If you are
trapped and have
a phone, call for
help
?
An unsafe action

Explanation:

There are various guidelines to follow whenever there is an earthquake which had been associated to saving lives, but emotional shock experience during earthquake usually eliminate preparedness, however, staying calm and adhering to the laid down guideline during and after an earthquake is critical to our safety. Precautions to take during an earthquake in term of personal measure includes  : staying out of damaged buildings, If outside, stay away from such buildings, and move to open areas, likewise been careful around broken glass and debris, If you are trapped and have a phone, call someone for help.

So from this; going inside when there is an earthquake is unsafe.you should stay outside in an open spot where there is nothing to fall on you.

A safe action: If you are  trapped and have  a phone, call someone for help.

 A. If you are outside, head indoors immediately in case another earthquake hits.

An unsafe action

B.  If you are trapped and have a phone, call for help.

A safe action

the answer to your question is a because laws act as guidelines as to what is accepted in society. without it there would be conflicts between social groups and communities. it serves as a norm of conduct for citizens.