Since the publication of the controversial study, _________
Which choice completes the text so that it conforms to the conventions of Standard English?
strict ethical guidelines for research have been implemented by the university.
the university has implemented strict ethical guidelines for research.
implementing strict ethical guidelines for research has been a priority for the university.
researchers at the university have been subject to strict ethical guidelines.
Correct Answer: B
Choice B is the best answer. The introductory phrase "Since the publication of the controversial study" establishes a timeline for an institution's response. "The university" is the logical subject taking action following the event.
Choice A is incorrect because "strict ethical guidelines" did not implement themselves. Choice C is incorrect because "implementing" is a gerund phrase, not the entity reacting to the study. Choice D is incorrect because "researchers" are the object of the guidelines, not the entity creating them in this context.