Final answer:
To maintain a student-faculty ratio of 14:1, the university should maintain the current balance between the number of students and faculty.
Step-by-step explanation:
If a university wants to maintain a student-faculty ratio of 14:1, the action it should take is D) Maintain the current balance between the number of students and faculty. This option ensures that the ratio remains the same. If more students are admitted without increasing the number of faculty, option A, the ratio would increase, meaning fewer faculty members per student. Alternatively, increasing the number of faculty without changing the number of students, option B, would decrease the ratio, resulting in more faculty members per student. Option C, decreasing both the number of students and faculty proportionally, would also maintain the ratio, but it is not one of the suggested actions in the question. Therefore, maintaining the current balance is the best measure to preserve the ratio of 14 students for every faculty member.