I believe it would be B. More than a year (Since it is a slow change, and that is the longest amount of time). Hopefully this helps
The answer is segment Segment
I’m pretty sure it would be electrical, but since is not an answer the the best would probably be chemical, since heat isn’t able to charge a phone, you’re not using nuclear decay to charge a phone, and the charging cord is not radiating power to your phone
Answer:
<em>C is your answer.</em>
<em>Sunlight only takes up a small portion.</em>