Answer:
Since the human brain evolved in a hunter-gatherer environment, it is attracted to danger.
Explanation:
Before 1789, the U.S. had been ruled by the Articles of Confederation (1781) in fear of govt. abusing power (like British rule). In 1787, it was obvious that they needed a perfect Union and so, while protecting the independence of states, the Articles of Confederation didn't describe the powers of a federal chief executive nor a judicial system. The creation of our Constitution and present form of government was informed by these and other considerations that arose during the years of the Confederation.
Answer: C - Marine Bioligists contend that the urban sprawl spreading into the oceans inveigably causes havoc for marine organisms and their habitats.
Explanation: The question asks for a follow-up to the claim, and the only one that actually supports the claim of harm to the environment is answer C.
The first sentence has a "subordinating conjunction" "because".
The second sentence has a "coordinating conjunction" "but".
The third sentence has a "coordinating conjunction" "and" .