The voice because words are more powerfull than the body language. Hope I helped.
Though this question you have to do on your own its based off of your opinion,
though when making the question be sure they are not yes/no questions
A secondary source is a source of information that was created later by someone who did not experience first-hand the events or conditions you are researching.
• A biography is an account of someone's life, written by someone else. This means it is a secondary source.
Hope this helps! :D
~PutarPotato