Was Germany a parliamentary democracy before 1918?
No, It was still an authoritarian monarchy
Yes - Reichstag was an elected legislative body similar to others in Europe
No - The Kaiser appointed his close friends Chancellor
Yes - The Chancellor had to have a support of the majority in the Reichstag which was elected.
Yes - The existent of a social insurance system was being created in response to support for the SDP, a democracy responds to the electorate and the government was doing that in Germany.
No - The Kaiser or 'Supreme War Lord' didn't have to listen to the Reichstaf, and frequently ignored them.
The Reichstag had the power of the purse over the Imperial Government.
The Reichstag barely assembled and it was not considered a full time job to be a Deputy within it, hence the Kaiser and the Chancellor were the real government.
No - The Kaiser had the sole right to interpret the constitution therefore no oversight of the Kaiser and his powers.