Well from what I have seen memoirs are shorter than an autobiography.
The wild oat seeds were stuck to the turtle's front legs, so when it was rolled off the road, the seeds fell off and onto the ground. The turtle then started moving, and while it was doing that, it covered the seeds with ground, and thus it planted them. One day, those seeds would grow into wild oats thanks to the turtle.
C. because the nouns and time come together to make sense with the verb
I would say that responsibility is an unwritten aspect of freedom because whether or not you want this to occur, freedom brings with it responsibility. Part of having freedom means being able to make your own decisions, which requires that one have responsibility in order to make smart choices.
