'Net metering' is sometimes seen in the news in the context of promoting the

Net metering is a billing mechanism that allows consumers who generate their own solar power to export surplus electricity back to the utility grid, thereby incentivizing decentralized renewable energy production. While option (d) is a common distractor involving household meters, it refers to measuring water consumption rather than the bidirectional energy flow characteristic of solar integration. The core concept tested is the policy framework used to promote grid-connected renewable energy systems among individual consumers.