Mabye you should provide an answer key or mabye make the question more accurate.
The kind of front that is most likely to arrive soon from Philadelphia is: cold front from the north.
<h3>What is a front in Geography?</h3>
This is a weather system that is known to cause a separation between two various types of air.
The front is usually known to carry air that has one one to be denser than the other.
Read more on geography here: brainly.com/question/12790602
The correct answer is - a. deposition.
The deltas are formed at the mouths of the rivers right before they enter a large water body, like ocean, sea, or lake. The rivers carry lot of material with them, and they do not have any problem carrying it while they are moving faster, but when they are slowing down significantly, they lose the force required to carry the material, so the material starts to deposit on the river banks. As the material deposits, it makes it hard for all of the river's water to pass through its river bed that is becoming partially blocked, so the river starts to branch out, and seen from above it takes a triangular shape if the peripheries are outlined, or as a tree that is branching out.