To weaken the argument, we need to find an option that challenges the claim that insurers decide who is a dental healer in modern society because they pay for the majority of dental care expenses.
The argument hinges on the idea that because insurance companies cover a significant portion of dental care costs, they have control over which providers can be reimbursed and thus influence who is considered a legitimate dental healer.
Let's analyze each option to determine which one undermines this reasoning:
(A) The kinds of dental services not covered by dental insurance are relatively inexpensive.
This option does not weaken the argument significantly because it does not address the influence insurers have over the approval of dental healers. Even if some services are inexpensive, insurers still control the majority of the dental care spending.
(B) Dental insurance companies must reimburse any provider licensed by state agencies that regulate dental care.
This option weakens the argument because it implies that insurers do not have the ultimate power to decide who is a dental healer. Instead, state licensing agencies regulate who can provide dental care, and insurers must comply with these regulations.(C) Patients sometimes choose to receive a particular treatment from a familiar dentist even if that treatment is not eligible for reimbursement.
This option weakens the argument somewhat because it shows that patients' choices are not solely driven by insurance reimbursement. However, it does not directly challenge the overall influence of insurers on the dental profession.
(D) Many of the dental-care services demanded by insured patients are unnecessary.
This option does not weaken the argument about insurers deciding who is a dental healer. It addresses the demand for services but not the control over who provides those services.
(E) A significant portion of uninsured patients forgo needed treatment because they are unable to afford the high cost.
This option highlights the issues faced by uninsured patients but does not address the argument about the control insurers have over dental healers.
The option that most directly weakens the argument is:
(B) Dental insurance companies must reimburse any provider licensed by state agencies that regulate dental care.
This option implies that the decision of who is a dental healer is ultimately made by state agencies through licensing, not by the insurers.