Scientific laws are statements based on repeated experiments or observations that describe determined natural phenomena.
These laws are based on repeated experiments and observations, usually made by different scientists over the years, and infers that if a particular set of conditions is present, the same phenomena will always occur.
They are true, within a certain range of validity, universal, simple, absolute, and broad, among other characteristics.
The fact that they are established after "repeated experiments" indicates that before a postulate or hypothesis can be considered a law it must be verified many times under many conditions.
The correct option is the second one.