Answer:
coalition soldiers met little resistance and the war mission had been achieved in six weeks ( C )
ExpLANTION:
The initial progress of the war was that in just over a month the coalition forces( united states , united kingdom, Poland and Australia ) invaded Iraq, the war was already won and the mission was achieved and this was because the coalition forces overwhelmed Iraqi forces and also met little resistance from the Iraqi forces.
there was 26 days of intense combat operations. but the war would later last from 2003 up until 2011 with different opposition forces also rising to challenge the coalition forces in the post war era