Concept:Opening capital is derived from closing capital by adjusting for net profit, additional capital, and drawings.Explanation:The accounting relationship for capital is:Closing capital=Opening capital+Net profit+Additional capital−DrawingsRearranging this formula gives:Opening capital=Closing capital+Drawings−Additional capital−Net profitSubstitute the given figures:Opening capital=650,000+30,000−100,000−250,000Opening capital=330,000Therefore, the correct option is D.Answer:D. 330,000