True. At least I'm pretty sure it's true. Hope this helped.
I believe the answer is B) more restrictions were placed on slaves
In <span>"Denmark Vesey plot" , a plot created by the slaves to overtake a city in one night was spoiled by a fellow slave that snitched their plan to his owner who reported it to local authorities.
After this incident, many of those slaves were hang and several restrictions were made in order to prevent their defiance.</span>
The standard is still important (arguably even more important compared to past situation) because due to the development of social media, the flow of information became extremely easy to consume.
Even though this might good for average people, we cannot deny the fact that this could also make it easier for someone who want to intentionally spread misinformation.