Which of the writing prompts below calls for an explanatory thesis?
A. Discuss who deserves first priority to Sacramento River water during drought years, fisherman or farmers.
B. Compare and contrast the life cycles of farmed and wild caught salmon, and explain why wild fish are healthier to eat.
C. Which should be served with fish sticks, ketchup or tartar sauce?
D. Compare catfish noodling and trout tickling and describe current laws regulating each activity.