9. True. Standing behind a podium builds more authority than walking about when you speak is True because it shows an expression of power & stability; the podium is a sign that you are 'stable' in money-wise & that no one can mess with you.
10. False. If you speak eloquently (silver-tongued) then you have no problems saying something that is meaningful of great importance.
I think the correct answer to the question being ask is A.
Credible means easy to believe. If something is likely; why should it not be credible?
also if it comes from a credible source, I would assume that it's credible.
Now, we're left with the choice between interested and disinterested party: among the two the interested party is more likely to make false claims, as they can benefit from them: so I think that answer <span>d.<em> the claimant is an interested party</em>
is the correct one. </span>