Yes you are correct, the answer is A because you want to do research on the hardships of "citizens." All of the other choices (except C) would probably be good for research on troops in the Civil War. Choice C. is not very reliable so you would not use that. How I helped!
Answer:
No, it's not an ethos
Explanation:
Ethos is defined as an appeal to credibility or character, from the statement above we could expound that the person that gave the appeal might not have tested if the food is really good per say, he/she could just presume it.
Answer:
The answer is Temperature.
Explanation:
As is known, seawater is a solution, since it contains salts in solution, which is directly proportional to density. Another influential factor in seawater density is temperature, since if there is an increase in seawater temperature, the density will decrease and the colder the water (lower temperature), the water will be more dense. Temperature has a greater effect on seawater density than salinity because water with a higher degree of salinity can float on water with a lower degree of salinity, depending on whether the layer with more salinity is at a higher temperature than the layer with a lower degree of salinity.