kaila is treating patient at scene of an automobile accident and she is having difficulty in hearing patient's voice due to police sirens, so such kind of communication barrier that which could be either environmental or natural condition that does not allow the transfer of message from one person to the other is called 'physical barrier'.
Physical barriers do not allow the communication to be effective. Hearing problems due to thunders, sirens, call disconnection, message not sending all come under physical barriers.
D. none of the above, because you need a good environment to exercise, you can live not in a house and still work out, and you don't have to live on a farm to exercise.
