Multiple choice technology programming languages Windows Presentation Foundation - the new user interface system was introduced with .NET Framework 1.1 .NET Framework 2.0 .NET Framework 3.0 .NET Framework 3.5 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Windows Presentation Foundation (WPF) was introduced with .NET Framework 3.0 in 2006 as part of WinFX technologies, alongside WCF and WF. .NET 1.1 and 2.0 used WinForms. .NET 3.5 added features but didn't introduce WPF. Version 3.0 is correct.