Final answer:
Yes, the last sentence supports the topic sentence, emphasizing the difficulty in focusing on writing due to the surrounding distractions.
Step-by-step explanation:
The last sentence of the provided paragraph from the student's question does indeed refer to and support the topic sentence. The topic sentence mentions the challenge of focusing on writing at the grandmother's ocean-side cottage, and the various distractions that interrupt the writing process are detailed throughout the paragraph. The final sentence reinforces the idea that work is left undone due to these distractions by emphasizing the abandonment of the composition in favor of engaging with the surrounding environment. This demonstrates the narrators difficulty in maintaining focus on the writing task due to the continuous allure of nature and the comfort of animals.