Answer:
She should use the threat of a mild punishment if he chooses to touch it.
Explanation:
Insufficient justification: In social psychology, the term "insufficient justification" is also referred to as "insufficient punishment" and is described as a phenomenon that opts to synthesize different theories of "internal versus external justification" and "cognitive dissonance". It generally occurs when a person uses a few "internal motivation" to assert a particular behavior.
The insufficient justification was introduced by Carlsmith and Festinger.
In the question above, Martha uses threat related to "mild punishment" if he chooses to touch it.