This question is missing the options. I've found the complete question online. It is as follows:
Part A Which lines from the poem best shape the theme that joy can be found in experiencing the natural world?
A. "For oft when on my couch I lie / In vacant or in pensive mood,"
B. "They stretched in never-ending line / Along the margin of a bay:"
C. "Beside the Lake, beneath the trees, / Fluttering and dancing in the breeze."
D. "A Poet could not but be gay / In such a jocund company:"
Answer:
I believe the lines that best shape the theme that joy can be found in experiencing the natural world are:
D. "A Poet could not but be gay / In such a jocund company:"
Step-by-step explanation:
The lines above belong to the poem "I Wandered Lonely as a Cloud", in which the author William Wordsworth narrates the memory of a day when he and his sister came across a field full of daffodils. The memory of such beauty still makes his heart fill with happiness, even when he is alone.
The theme of the poem concerns precisely that: how experiencing the natural world brings happiness. The daffodils dancing in the wind are a jocund (cheerful) company, and a poet could not but be gay - which means he can only feel happy when in the company of the dancing daffodils. Watching them dance, communing with nature, brings joy.