Final answer:
The Speaker of the House has the greatest influence on what becomes a law in the House of Representatives. Therefore, the correct option is d) Speaker of the House.
Step-by-step explanation:
The person who has the greatest influence on what becomes a law and what doesn't in the House of Representatives is the Speaker of the House. The Speaker is the presiding officer, the administrative head of the House, the partisan leader of the majority party, and an elected representative of a single congressional district. The Speaker holds significant power, such as assigning bills to committees and deciding when a bill will be presented for a vote.