Final answer:
The level of force required when making a mark with the heat temp indicating crayon is variable depending on the surface.
Step-by-step explanation:
The level of force required when making a mark with the heat temp indicating crayon is Variable depending on the surface. The force needed to make a mark will vary depending on the hardness or softness of the surface you are marking on. For example, if you are marking on a hard surface, you will need to exert a heavier force compared to a softer surface.