Who represents Alaska in the U.S. House of Representatives?

The selection of Nick Begich as the representative for Alaska in the U.S. House of Representatives is accurate based on the context of the question. Nick Begich is a member of the U.S. House, serving as a congressman, and plays a crucial role in representing the interests and voices of Alaskans at the federal level.

The other individuals mentioned perform or have performed significant roles in Alaska's government but are not currently holding the position of U.S. Representative. Lisa Murkowski and Dan Sullivan are both U.S. Senators from Alaska, which pertains to the Senate rather than the House of Representatives. Mike Dunleavy is the Governor of Alaska and focuses on state-level executive functions, further distinguishing the roles between the state government and federal representation.