In an organization with 70 employees, 30 are females and 30 employees are married. 24 employees hold a graduation degree. 19 married employees are graduates of which 7 are males. 12 males are graduates while 15 males are married. How many unmarried graduate females are employed in the organization?
1. 3
2. 5
3. 0
4. 1

Using the given information, the following table can be created.

We are told that the total number of employees with a graduation degree is 24.

The number of graduate males = married + unmarried = 7 + 5 = 12.

The number of married graduated females = 12.

Thus, the 24 graduated employees are among the male employees and married graduate female employees.

Thus, the number of unmarried graduate females = 0.

Hence, the answer is option C.