I can't see all of option D, but it is potentially correct. Please tell me what option D is and I will tell you if it is option "B" or option "D."
If it is a government website with the .gov url it is more reliable.
Answer:
The overview including its problem is listed in the explanation segment following.
Explanation:
- The cool, unobstructed front develops whenever the cool front overwhelms the warm side or front.
- The warm front increases over its colder, then gradually move towards the surface of the earth.
The subsequent weather system seems to be close to something like a moving warmer front.
So that the above seems to be the right answer.