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.
Answer:
A) It may take me months, if not years, to train for a marathon
the answer to your question is theme
A triangle is equilateral if and only if the triangle is equiangular.
<span>or: A triangle is equilateral <-> the triangle is equiangular. I hope this answer helps. Looking forward to help you again. Have a great day!</span>