During a student speech, the campus landscapers begin mowing the lawn, making the student’s presentation difficult to hear. The audience is experiencing , one of several listening obstacles.

Noise

Explanation:

Noise can be described as a type of sound that causes distraction; this sound can be generated from various sources. It is a major hurdle to active listening as it disrupts an individual's ability to understand the message that is being communicated correctly.

Active listening requires an environment that is free from any type of strange sound which is capable of placing a barrier to proper communication.

In the scenario described above, the sound coming from the campus landscaper that was mowing the lawn is an example of noise. This sound coming from the lawnmower hinders the audience from understanding the message that is being passed during the student's presentation.

i am pretty sure it is d.