Let's look at the two that you can eliminate without much worry. B and C are not going to say much about ecofriendly technologies.
It's between the New Science Lab and A record of Operational Data. The Operational Data might given you a hint about the need to reduce costs, but it won't say much about how to do it.
I would pick D. The science lab has the best chance of employing alternate ways of looking for cost control using ecofriendly technologies. It is a lab after all, and that is the first place one should seek the most modern ideas.
The differences are that Magna Carta<span> was made to set rules and give rights to the nobility, royalty, and other high-ranking officials of that time, and the </span>Constitution<span> was written to give rules and rights to all people.</span>
