1. Use of hedging language: "I don't think it's always appropriate..." shows a nuanced opinion, which is good for IELTS Speaking Part 3.
2. Complex sentences: "Sometimes, companies only donate for the sake of publicity rather than genuine concern, which can come across as insincere." This sentence uses a relative clause ("which can come across as insincere") to add detail.
3. Modal verbs: "might distract them from running their business effectively" uses the modal verb "might" to express possibility.
4. Comparative structure: "Not all companies, especially small ones, have the financial capacity..." uses a comparative phrase to clarify the point.
5. Clear conclusion: "Ultimately, I believe social welfare should be the responsibility of the government, not private businesses." This is a strong, clear concluding sentence, which is important for a well-rounded answer.