Answer:
I'm not too sure but I'd probably guess "preparation for Gulliver's lengthy imprisonment.
The central idea is the idea that ties all the other ideas together to make a story
The answer is D. A compound sentence requires at least two separate clauses that contain related ideas. These independent clauses can be joined using a coordinated conjunction - for, and, nor, but, or, yet, so- or by the use of semicolons.
Source B is more credible because it is from a government site, so it is meant to inform. It has a quote that shows drones are in debate.
At first look, the sources seem similar. They both were written around the same period and the URL appears almost identical. However, it is important to notice that source A is from a website ending in ".net," while source B ends in ".gov." Government websites are always more credible than a website ending in ".com" or ".net." Also, source A has advertisements, which means it is mostly for entertainment. In comparison, source B has a quote from President Obama. Since the research is about the invention of drones and their controversial uses, source B is also more helpful since the title specifically mentions the rules and misuse of drones.
Suffering would be like feeling depressed or in constant pain. Being sad, you just feel down and unmotivated.