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.
Answer: claim and reasoning
If teachers are allowed to have a carry on (gun), it would allow them to protect against a shooter or intruder on the campus they work on. With proper training and discipline they could use their carry on or gun to protect not only their selves but other students. teachers would no longer be defenseless in case of an active shooter situation. The downside is that some teachers may use it to threaten students, but that is why with proper discipline and training teachers could save lives just with a gun on their side.
