The same young woman sits in the front row of a history class, which is also attended byyour two friends. they notice in this class as well her history professor seems upset withher when she uses her cell phone beneath her desk to text. noticing that other people inthe back row are texting as well, they conclude that the professors just have it "out forthis student."your friends’ conclusion would be an example of a(n):
a. experiment
b. theory
c. hypothesis
d. observation
e. scientific law or principle

Your friends’ conclusion would be an example of a(n): d.observation

Explanation:

An observation occurs when a person or people embark on a mission to carefully observe someone or something , watching that person's every step and action. They notice , the fact that they notice is an indication that they have been watching this girl and others who text under their desks.

When an observation has been made the observer is able to say something about that person or something that they have been observing due to the fact that they have watched their behaviour. The friends are able to conclude and say the professor has had it "out for this students"they making this conclusion after what they have observed from this other students.