question_answer

Direction: In each of the following questions, identify the diagram that best represents the relationship among classes given below:

Professors, Researchers, Scientists

A)  

B)  

C)  

D)    

Correct Answer: D

Solution :

Some professors may be researchers and vice-versa.

Some professors may be scientists and vice-versa.

Some researchers may be scientists and vice-versa.

Some professors who are researchers may be scientists.

Some researchers who are scientists may be professors.