Which of the Following Is an Example of a Change

Which of the following is an example of a change being made for efficiency?

A) A campaign appoints a new manager who better understands the candidate's vision.
B) A local restaurant adds the ability for customers to order their meals online after numerous requests.
C) A food manufacturer creates a goal to produce all organic food in the next five years.
D) An airline retires all the planes that cost the most money to repair every year.
E) The team in an office restructures so more employees are working toward the company's stated app-based goals.