Excise Duty is a tax that is levied on commodities that are produced and consumed within the country. This means that the tax is imposed at the manufacturing or production stage of goods, rather than at the point of import or export.

Option 1: Commodities that are exported - This is incorrect. Excise Duty is not applicable to commodities that are exported. Exported goods are usually exempted from this tax.

Option 2: Commodities that are imported - This is incorrect. Excise Duty is not applicable to commodities that are imported. Import duty or customs duty is imposed on goods that are brought into the country.

Option 3: Both the exported and imported commodities - This is incorrect. As mentioned earlier, Excise Duty is only levied on commodities that are produced and consumed within the country. It does not apply to either exported or imported goods.

Therefore, the correct answer is option 4: Commodities that are produced and consumed within the country.