Commodities rose the most in two weeks amid speculation that China may offset its slowing economy by easing monetary policy, boosting its demand for raw materials, Bloomberg reported. The Standard & Poor’s GSCI Spot Index (SPGSCI.INDEXSP) of 24 raw materials has advanced 15% from a 10-month low on October 4, while a gauge of industrial metals rose to an 11-week high on Tuesday. Copper, crude oil and gold may rally this year as economic growth in China and the US boost demand, Goldman Sachs Group Inc (GS.NYSE) said last week. “More and more market players believe that China will implement further monetary-easing measures,” Eugen Weinberg, the head of commodity research at Commerzbank AG in Frankfurt, said in a report. “This is giving considerable buoyancy to metal prices.”