What challenge did the ancient hebrew people face after migrating to canaan?

the mountains prevented trade.

the area was easy to attack and invade.

the terrain was too rugged to use for herding.

the region was too remote to trade with other regions.

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?