(1) I think that native speakers often use the present tense when
they think of a situation as continuing and not finished.
(2) I assume that the trial is still going on. Therefore, the person
answered with "presents" because the trial is something that is currently
happening every day at this period of time. Presumably, the
suspect is going to have the same conduct every day.
(3) After the trial, and the jury has made its decision, then it would
be appropriate to use "presented."
Have a nice day!