Final answer:
Tax and budget bills can only be introduced by members of the House of Representatives according to Article I, Section 7 of the Constitution. The Senate can propose amendments and must give final approval. The President has a role in signing the bill into law or exercising veto power.
Step-by-step explanation:
The statement that is true when a tax or a budget bill is to be introduced into Congress is: A) Tax and budget bills can only be introduced by members of the House of Representatives. This is because Article I, Section 7 of the Constitution specifies that "All Bills for raising Revenue shall originate in the House of Representatives; but the Senate may propose or concur with amendments as on other Bills." When it comes to the actual legislative process, the Senate can offer changes and must ultimately approve the bills before they go to the president, but only the House has the power to introduce tax and spending bills.
Although only the House can introduce tax bills, it's important to note that the process also involves the Senate and the President. Once the House passes a bill, it is sent to the Senate for consideration. The President has the power to sign the bill into law, veto it, or allow it to become law without a signature under certain conditions. The opportunity for the Senate to propose amendments ensures that they have input into the legislation, although they cannot initiate a tax or budget bill themselves.