The best answer would be Letter B - to entertain.
The author merely would like to provide amusement to the readers at his expense. It certainly does not persuade, explain, nor inform anything since it states - <span>But why bother with the descriptions; you’ve probably already grasped the idea!</span> - which could be taken as a witticism.
Where are the statements?
Answer:
A
Explanation:
B,C, and D both use thermal magnetism and electrical. You just have to read the question thoroughly
