One insect that I know is a bee and they are very useful. Bees pollinate our plants, which means they carry pollen between plants to fertilize them, or even between different parts of the same plant, which help plants reproduce. They also make honey which is also used for humans to eat.
His ships sinking and his men drowning.
because the audience would be familiar with them as parables were highly popular then. Also, it being a monk, it is supposed to be a serious story that teaches you something, not a funny or obscene story such as those from the Wife of Bath or the Miller.
Mature or adult would be your answer.
D. "this was an uneasy secret..."