Answer: c. Do not include the normal costs of commuting
Explanation: deductible expenses do not include the normal costs of commuting. Deductible expenses can be subtracted from a company's income before it is subject to income tax. Therefore they reduce tax liability. Utilities, wages, rent, auto expenses, meals and entertainment, some business expenses such as advertising, employee benefits, insurance etc. are examples of expenses that can be deducted from a company's income.