Unlike many democracies, in Germany, political parties are constitutionally included in the political system

The manipulation of the independent variable

A) should be clearly planned in advance of the data collection. B) should be evaluated with some type of manipulation check if there is any question about how effective it is. C) should be pretested to verify that it will work. D) All of the above

When the voting age was lowered to eighteen, those aged eighteen to twenty-one voted in impressive numbers.

Answer the following statement true (T) or false (F)