Firstly, do your best research and contact only those agencies that guarantee plagiarism-free content. It will help you stay confident that your assignment isn’t copied.
Try to connect with the writers and ensure they have relevant experience with assignments within your scope of work.
Don’t forget to check the writer’s reviews from their past clients.
Choose an assignment writer who is open to sharing samples. It will help you assess their writing style.
Above all, you can also take recommendations from people who have already hired an assignment writer before.