Answer: 3. a motion to dismiss.
Step-by-step explanation:
When a party believes that a case has no legal basis, in other words the party does not believe that what they did warrants a court case, they would file a motion to dismiss so as not to waste resources fighting something they see as frivolous.
In this case, NuProducts is essentially filing a motion to dismiss when they say that they did nothing wrong according to the law. They would prefer if the courts simply dismissed the case so that they would not incur costs to fight the case.