Answer: The phrase that best completes the sentence provided is D. muchas especies estén en peligro de extinción.
Explanation: "Es una lástima que" can be translated as "It is a pity that". In that way, <u>what must follow this portion of the sentence is a phrase that describes a negative situation.</u> The only option that presents a negative situation is D. "muchas especies estén en peligro de extinción", <u>which means "many species are in danger of extinction"</u>. In contrast, all the other options present positive situations, which makes them unsuitable for the sentence provided.
