The argument that is not reasonable for the insurance company to use to justify Ben's higher homeowners insurance premium is:
a. The age and outdated structural design of the house implies that remodeling is likely. This warrants a higher premium.
This argument is not justified because the potential for remodeling in itself does not inherently increase the risk of a claim or damage to the property. Insurers typically focus on the risk factors that could lead to losses, such as fire hazards, flooding potential, and structural integrity. The possibility that a homeowner might remodel their property does not correlate with increased risk in the same way that outdated plumbing, fire hazards, or flood potential does.