a sales tax is a type of\n○ progressive tax.\n○ indirect tax.\n○ proportional tax.\n○ direct tax.

Brief Explanations:

A sales tax is levied on the sale of goods and services and is paid by consumers but collected by sellers on behalf of the government. Indirect taxes are those where the burden can be shifted to another party. Since sellers collect sales - tax from consumers and remit it to the government, sales tax is an indirect tax. Progressive taxes increase as income increases, proportional taxes are a fixed - rate regardless of income, and direct taxes are paid directly by the entity on which they are imposed (like income tax). Sales tax doesn't fit these other categories.

Answer:

indirect tax.