Answer:
A. effective
Step-by-step explanation:
As more and more one writes better, there will be communication of right message and ideas that will be passed across to the audience. As with other disciplines, continuous practice would make one to be better in terms of writing .There should also be search for knowledge which will assist to develop writing skills.
Through continuous writing, one's writing will be more effective having come across different hurdles. The hurdles here means challenges one would encounter at the beginning but which have now become Surmountable due to continuous practise.