Adapted from My Shadow by Robert Louis Stevenson

I have a little shadow that goes in and out with me,
And what can be the use of him is more than I can see.
He is very, very like me from the heels up to the head;
And I see him jump before me, when I jump into my bed.

5 The funniest thing about him is the way he likes to grow—
Not at all like proper children, which is always very slow;
For he sometimes shoots up taller like any play toy rubber ball,
And he sometimes gets so little that there's none of him at all.

He hasn't got a notion of how children ought to play,
10 And can only make a fool of me in every sort of way.
He stays so close beside me, he's a coward you can see;
It would be a shame to stick to any as that shadow sticks to me!

One morning, very early, before the sun was up,
I rose and found the shining dew on every buttercup;
15 But my lazy little shadow, like an utter sleepy-head,
Had stayed at home behind me and was fast asleep in bed.
10
Which line from the poem best shows that the speaker does not understand the purpose of his shadow?
A.
And can only make a fool of me in every sort of way.
B.
And what can be the use of him is more than I can see.
C.
The funniest thing about him is the way he likes to grow—
D.
I rose and found the shining dew on every buttercup;