Answer:
d. When calcium chloride reacts with water, the temperature changes.
Explanation:
A scientist makes the claim that chemicals like calcium chloride contain energy. The evidence that supports this claim is that when calcium chloride reacts with water, the temperature changes.
The change in the temperature itself is an evidence of the presence of energy. Energy is said to change the temperature and in the calcium chloride solution, the change in temperature indicates that energy is produced.
