The key on this one is to realise what the underlying premise of the question is: i.e the T.o.V. caused the collapse or at least substantially weakened the Weimar Republic.
So your argument should focus on answering that question. Either you think it did have a major impact, it had very little or a bit.
I would suggest a really nuanced argument would be to chunk your answer into 3 sections: 1919-1923, 1924-1929 and then 1930-1933. The ToV undoutedly handicapping the early years of the Weimar Republic but once inflation was under control from 1924-1929, Germany was a relatively stable and in fact wages were rising faster in Germany than in Britain. For the final period you need to consider how the ToV made Germany particularly fragile to outside economic shocks. Also, underlying sore 'clause 231', plus lost territory not won back..........this continued as a theme throughout the weimar period.