In 1922, a New York radio station ran what is considered the first commercial radio broadcast (a 10-minute promotion for co-op apartments). This established the commercial/advertising model for American radio. Britain took a different path. In 1923, the BBC was established using public taxes on radio receivers (later evolved into the television licence fee). This model was designed to fund programming without dependence on commercial sponsors, giving the BBC greater independence from market pressures and direct government control. The textbook notes: “Although most countries of that era also adopted government-sponsored radio broadcasting, the BBC and CBC are among the few that were able to insulate programming content from direct government influence.” In contrast, “most countries used radio to further the political aims of those in power.” The Canadian Broadcasting Corporation (CBC) was modelled after the BBC for similar reasons.

This means that core HR functions are universal - all organizations must perform staffing, development, compensation, safety, labor relations, and record-keeping, though the scale, complexity, and formality may vary with organization size.

Lasts is the correct verb. We use last to describe the duration of an event: “The storm lasts 45 minutes.” Ends would mean it terminates at 45 minutes (doesn’t convey duration). Remains means to stay or continue existing, which is awkward here. Last is the idiomatic choice for expressing how long something continues.

Correct Answer: B — lasts.

Passive immunity involves receiving ready-made antibodies, not producing them. Maternal antibodies via breast milk (IgA) provide temporary protection. Active immunity results from infection or vaccination.

For a body projected vertically upward, only gravity acts on it — a constant acceleration $g$ downward. From $v = u - gt$, velocity changes linearly with time, producing a straight line on a $v$-$t$ graph with slope $-g$.