Read the passage.

The environmental and social benefits of high-speed rail are numerous. High-speed trains are certainly fast. High-speed trains are also operable and reliable in all kinds of weather. They are environmentally friendly and energy efficient. More importantly, they decrease greenhouse gas emissions and improve air quality. The high-speed rail lines currently under construction in Los Angeles, Chicago, Orlando, and Albany are anticipated for completion by 2023. The future is bright for high-speed rail.

Which sentence best uses ellipses?

The high-speed rail lines currently . . . in Los Angeles, Chicago, Orlando, and Albany are anticipated for completion by 2023.
The high-speed rail lines . . . are anticipated for completion by 2023.
The high-speed rail lines currently under construction in Los Angeles, Chicago, Orlando, and Albany . . . 2023.
The high-speed rail lines currently under construction . . . are anticipated for completion by 2023.

Ellipses are used to omit words, phrases or clauses (from a speech or writing) that are not relevant or that can be understood from the context, in order to focus on the most important information quickly. In this case, option D has the sentence that best uses ellipses because it omits “in Los Angeles, Chicago, Orlando, and Albany” to focus on the main point of the sentence which is the current state of the high-speed rail lines and when they are expected to be completed.