Concept:In a not-for-profit organization, the capital account is called the accumulated fund.Explanation:The accumulated fund represents the net worth of the organization.It is calculated by deducting all external liabilities from the total assets.Thus, the formula is:Accumulated Fund=Total Assets−Total LiabilitiesThis directly corresponds to option B.Adding liabilities or capital in the other options would not give the correct net worth.Answer:B. assets - liabilities