In delivering a team presentation, there are several tasks that the author recommend be completed by

only one person. Explain what these tasks are and why it is best to have only one person do them.

What will be an ideal response?

There are four specific tasks the author recommend be done individually rather than by the team.
(a) First, have one person design and produce all presentational aids so that the design and
appearance are consistent rather than having a hodgepodge look.
(b) Have one person display all presentational aids during the speech except when s/he is
speaking. This helps to make the presentation flow more smoothly.
(c) Assign one person to keep time and provide other signals to the group, such as if someone is
speaking to fast or slow, too loud or soft. This ensures that the group is receiving consistent
messages. Also, if multiple people were doing this, it would become quite distracting for the
audience.
(d) Finally, if there is a question and answer period, it is best if one person manages it, so that
there aren't three or four group members all calling on audience members at the same time.