What .NET dependencies do I install if I want compatibility with Vista, 7, 8.x, 10+

I'm confused about about .NET Framework dependencies. I targeted .NET Framework 3.5 for compatibility with older Operating Systems knowing that users without .NET 3.5 would be prompted to download and install it. I have .NET Framework 4.7.2 installed for compatibility with Windows 10 feature updates. My question is if I build an app using that framework, will Windows prompt the user about the framework needed. Then install it just like framework 3.5? How do I handle this? I want compaibility with most Operating Systems.