Answer:
Social media is used all around the world, but can also dangerously affect your mental health. Studies show that the longer people spend on social media, the more likely they are to develop insomnia and depressive disorders.
Can you choose more than one option?
Because a conclusion should not repeat word-for-word the introducion (this would make it actually pretty redundant), but other than this, it should be all of the remaining! (but if i had to choose one, I'd go with "summarize the main points- this would be most effective and most relevant./)
So my answer is: it should restate the thesis AND summarize the main points AND be imaginative
but it should NOT repeat the introduction word-for-word.
