Explanation:

• Core inflation measures the change in the costs of goods and services, but it excludes volatile items that are subject to frequent price swings, most notably food and energy prices.
• Items like fruits, vegetables, crude oil, and gasoline are excluded because their prices can fluctuate wildly due to seasonal factors, geopolitical events, or supply shocks, which can give a misleading picture of underlying inflationary trends.
• The price of medical services is considered a more stable component of the overall price index and is therefore included in the calculation of core inflation.