Choice A is the correct answer. Set $x=0$.

1. Substitute: $4(0) + 5y = 20 \rightarrow 5y = 20$.
2. Solve: $y = 4$.

💡 Strategic Tip: In Standard Form $Ax+By=C$, the y-intercept is $C/B$.

Choice B is incorrect because it is the x-intercept ($20/4$). Choice C is incorrect because sign error. Choice D is incorrect because calculation error.