I think B
Hope this helps!
Here's three i can name off the top of my head.
Physics , Chemistry and Biology are all real types of science.

Actually Welcome to the Concept of the Acceleration.
a = V2-V1/t
so the correct answer is, a = ∆v/t
option C.) is correct, a = ∆v/t
Answer: The crystal structure of ionic compounds is strong and rigid. It takes a lot of energy to break all those ionic bonds. As a result, ionic compounds are solids with high melting and boiling points.