Witch object has most potential energy.
a. a ball resting on the ground.
b. a ball being thrown at 100 miles per hour.
c. a ball on top of a refrigerator
d. a ball resting on the edge of a cliff.

D, if the cliff is higher than the refrigerator

Explanation:

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance