Which government agency is responsible for taxes and offers resources for free tax filing?

The correct answer is the IRS, or Internal Revenue Service. This agency is primarily responsible for administering the federal tax laws of the United States, which includes the collection of taxes and enforcement of tax regulations. The IRS provides various resources aimed at assisting taxpayers in fulfilling their tax obligations, including the provision of free tax filing options such as the Free File program. This initiative allows eligible individuals to file their federal tax returns at no cost using partnered tax software, making the tax filing process more accessible and affordable for many Americans.

The other agencies listed do not have responsibilities related to tax collection or tax filing. The FBI focuses on federal law enforcement, the SEC oversees the securities industry, and the FTC deals with consumer protection and antitrust laws. Therefore, the IRS is uniquely positioned as the agency dedicated to tax-related resources.