Which sentence best demonstrates that the author learned an important lesson?
A I disliked the trade, and had a strong inclination for the sea, but my father
declared against it.
B And when in a boat or canoe with other boys, I was commonly allowed to
govern, especially in any case of difficulty.
C My proposal was to build a wharf there fit for us to stand upon.
D Although I had pleaded the usefulness of the work, mine convinced me that
nothing was useful which was not honest.