An advantage of a shorter term is that the representatives would not loose their motivation to work and would not treat their work as a routine that they just go through. Additionally, with shorter terms more people will participate in the governing body, which will lead to a better representation of the entire population.
The biggest disadvantage of a short term is that it does not let the people gain experience and correct their mistakes if they shall commit any.
D. To express hope that the current government will be reformed