Final answer:
The only correct statement about primary care prevention of Type 1 DM is that there are no interventions that can prevent it, as it is an autoimmune disease and not influenced by lifestyle or preventative medication.
Step-by-step explanation:
The correct statement by the client about primary care prevention of Type 1 Diabetes Mellitus (DM) is, "There are no interventions that can prevent Type I DM." Unlike Type 2 diabetes, which can often be managed and even reversed with lifestyle interventions such as exercise and dietary adaptations, Type 1 diabetes is an autoimmune disease that cannot be prevented. Furthermore, while medications such as metformin are used to manage diabetes, they are not preventive measures for Type 1 diabetes. Primary prevention in the case of Type 1 diabetes is not currently possible, and it is managed with insulin therapy and blood glucose monitoring after diagnosis.