Read the quote from the us constitution. the powers not delegated to the united states by the constitution, nor prohibited by it to the states, are reserved for the states respectively, or to the people. which type of powers is this describing?

President of the united states has scheduled a cabinet meeting today to discuss energy policy with specific focus on pollution and global warming. given what you know of the executive branch, which group of attendees would the president most likely expect to provide up-to-date information and expert insight during this meeting?