The donation by Dizzy of $2 from every entrance fee to the shelter can best be described as a True Variable cost.
Dizzy donates $2 from every entrance fee which means that the total amount they give to the shelter would depend on the number of people who come to the amusement park.
In conclusion, option C is correct.
Find out more on true variable costs at https://brainly.com/question/25285820.