How to access options of Redux framework in front end

I have no idea how the framework actually stores its options, but I guess it uses the name redux_demo, not redux_demo[10]. If the option is an array, you can access the element 10 like this:

$redux_demo = get_option( 'redux_demo' );

if ( ! empty ( $redux_demo[ 10 ] ) and 1 === $redux_demo[ 10 ] )
{
    print '<h1>Text</h1>';
}