Salutary Neglect -> free market economy
Separation of powers -> three branches of government
English common laws -> basis of us laws
The answer is mutuality among peers. In addition in the young adulthood, the responsibilities in this stage are centered in the order of the drive to found intimacy, connection, and significant peer relationships. The post persuasive and significant peer relationship is marriage, and this is also the relationship that trends toward the most depth and intimacy. As a result the resolution of the psycho-social crisis is attained by establishing intimacy (mutuality) between peers.
The answer in the first sentence above is hypothesis because it is defined as having to state a prediction or conjecture in regards about an experiment whereas the second sentence' answer is experimental question because researchers tend to state what they plan to do in regards of their investigation and they do not apply any predictions in the experiment.
1: Peninsula
2: Volcanoes
3: 4
4: Destructive Waves
Hope this helps!