<StackPanel xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<StackPanel Background="Violet">
            <RadioButton Name="Pierwszy" GroupName="pierwsza">Opcja 1</RadioButton>
            <RadioButton Name="Drugi" GroupName="druga">Opcja 2</RadioButton>
        </StackPanel>
        <StackPanel Background="Aqua">
            <RadioButton Name="Trzeci" GroupName="pierwsza">Opcja 3</RadioButton>
        </StackPanel>
        <StackPanel.LayoutTransform>
            <ScaleTransform ScaleX="2" ScaleY="2"/>
        </StackPanel.LayoutTransform>
</StackPanel>