Final answer:
The correct answer is (d) Sponsor, as the sponsor is the member who introduces a bill for review in the U.S. House of Representatives. The sponsor works to gain support for the bill and guide it through the legislative process.
Step-by-step explanation:
In the U.S. House of Representatives, a bill needs a sponsor to be formally introduced. The sponsor is the first member to take on the responsibility of signing and presenting a bill for review. This person, or in the case of multiple legislators introducing legislation together, the co-sponsors, work to persuade other members of Congress to support the bill. After securing the necessary backing, the bill can be introduced, assigned a number starting with H.R., and referred to a standing committee for action. Despite the key roles filled by other leadership positions such as the Speaker of the House and the Majority Leader, it is the sponsor who champions the bill through the legislative process.
While the Speaker of the House has significant administrative duties and powers over the legislative agenda, including when a bill will be presented for a vote, the term 'sponsor' specifically refers to the member who introduces the bill. Thus, in this context, the correct answer is (d) Sponsor.