A cold front<span> is the transition zone where a </span>cold<span> air mass is replacing a warmer one
</span>T<span>hey move more slowly than warm fronts.</span>
Because other three are characteristics of the cold front and they move faster than warm
so option D is correct
hope it helps
Global warming is a big issue where the planet is getting warming. some of the causes are gas, air pollution, trash in the ocean, car oil, smoke.
