Risking money on the outcome of a future event is called a bet. This term specifically describes the act of wagering funds on a result that is not yet known, with the possibility of winning or losing depending on what happens. In gambling contexts, you often hear phrases like "place a bet" on a game, a race, or a spin, which captures that idea of wagering on uncertainty. The other terms refer to things rather than the act of risking money: audit mode is a diagnostic or testing state used in machines, a cashbox is just the container that holds cash, and a bank note acceptor is the device that takes banknotes to fund play.

Topper refers to the graphic or video display mounted on top of a gaming terminal. It’s designed to be highly visible from all directions, often using bright graphics or dynamic video to attract attention and boost floor presence and recognition. This accessory sits above the main cabinet and is separate from the machine itself, serving as a marketing highlight. The other terms don’t fit because a tilt switch is a tilt sensor, a video lottery terminal is the whole machine, and a voucher is a payout ticket. So the on-top display used for visibility is called a topper.

Think about how gambling activities are categorized by where they happen and how they’re experienced. Gambling on social media is best described as social gambling because the defining feature is the social context within a network—sharing, competing with friends, and using social features or play money—rather than engaging with a separate, real-money casino or sportsbook. This distinguishes it from an online casino, which is a dedicated platform offering real-money casino games outside of a social network. It’s also why digital wagering isn’t the right label here; it’s not a standard industry term for social-media gambling. Mobile betting focuses on real-money bets through sportsbook apps or mobile sites, typically outside the social-network environment. So, the term that most accurately captures gambling activities on social media is social gambling.

The key idea here is who regulators designate as the entity responsible for selling games to the public at a terminal. The licensed owner is the retailer because they are the business at the point of sale that directly conducts lottery transactions or casino terminal activity and bears regulatory accountability for those operations. The retailer holds the license to operate the terminal within the venue and to interact with players, ensuring compliance, auditing, and reporting requirements are met. The operator runs the venue but may not hold the terminal license itself; the distributor provides hardware and maintenance but isn’t the licensing holder; a manager is a role within the business, not the license owner. So the retailer is the correct choice because licensing for these terminals is tied to the retail entity that sells or facilitates the wagering at the point of sale.