How does a scientific theory differ from a scientific law?

a) a law is true but a theory is not

b) a theory might change but a law will not

c) a law is a fact but a theory is just a guess

d) theories are invented but laws are discovered

1.A law is an observation; a theory is the explanation of that observation.

2.A theory requires experimentation under various conditions. A law has no such requirements.
3.A theory may become obsolete with time. This is not the case with a law.
4.A theory can be replaced by another better theory; however, this never happens with a law.
5.A theory may be strong or weak according to the amount of evidence available. A law is a universally observable fact.

Hope this helps:)

i think that the answer is c