B. It contains the scientific information about how snow forms.
Explanation:
Expository texts/ essays are those works of literature that details the scientific and detailed background of the topic or subject. It also requires the student or readers to work out on their own the many different questions that will arise from the text, making them a part of the experience. After this questioning, they also have to keep on trying to find the evidence of that such event, and bring an argument for it. This process is more like a science experiment where the students are made to work out the solution, find evidence or proof and then make argument about that experiment.
Thus, <em>"The Story of Snow"</em> by Mark Cassino and Jon Nelsoncan be taken/ labeled as an expository text for it contains the scientific information about how snow form. Not only that, it also provides pictures and images of the various snowflakes and also provides answers to the many questions regarding snow.
