Prices for groceries, couches and rent are all climbing rapidly, and Federal Reserve officials have been warily eyeing that trend. On Wednesday, they are expected to take their biggest step yet toward counteracting it.Central bank officials — who have been signaling for months that they are preparing to pull back economic support — are expected to raise their policy interest rate by a quarter percentage point. That small change will carry with it a major signal. Policymakers are telling markets and the public that they have fully pivoted to inflation-fighting mode and will do what is necessary to make sure price gains do not remain hot for months and years to come.The Fed will release its decision at 2 p.m., and Jerome H. Powell, the …
