It’s c because they both have a b and d
Answer:
-1
Explanation:
There are more electrons, which are negatively charged. However, there is only one more electron then proton, therefore, -1.
Hot water, pan to hold water, stopwatch and thermometer are the pieces of equipment which would be useful for investigating the claim.
<h3>
What is Temperature?</h3>
This is the degree of hotness or coldness of a substance and it is measured with the use of the thermometer.
Since temperature is involved, the thermometer and heat source are important thereby making option D the most appropriate choice.
Read more about Thermometer here brainly.com/question/2339046