Final answer:
The electoral system used to fill seats in the House of Representatives since 1842 is from single-member districts.
Step-by-step explanation:
The subject of this question is the electoral system used to fill seats in the House of Representatives since 1842. The correct answer is d) From single-member districts. In the single-member district system, each state is divided into individual districts, and only one legislator represents each district. The number of seats in the House of Representatives is distributed across the states based on population, with more populous states receiving more seats.