The correct answer is easy child.
No child is undemanding - parents have to be around their baby at all times, caring for it, and tending to its every need. But this child can easily adapt to anything, which is why she doesn't really take up a lot of her parents' time, and doesn't cause problems.
Betty must rely on what Sternberg calls<u> "practical" </u>intelligence.
Practical intelligence includes the capacity to manage every day undertakings in reality. You can call it "road smarts" that indicate how well a man identifies with the outer condition. It is additionally guided towards objectives which try to adjust to or change your general surroundings. Intelligent behavior includes adjusting to your condition, changing your condition, or choosing a superior situation.