The most appropriate response to the news report would be to "seek additional data."
While the provided chart shows that electricity costs have not fluctuated significantly over the years it covers (2012-2021), inflation can be measured using a variety of factors beyond just electricity costs. It's important to consider other aspects of inflation, such as costs of goods and services, labor, and overall economic trends. Therefore, seeking additional data would provide a more comprehensive understanding of the inflationary context.