C i think You have to look more into it though
what kind of question is that?
<span>B)an influx of skilled immigrants</span>
"The mass of Substance C is five times the mass of Substance B", the given statement is correct.
Answer: Option D
<u>Explanation:</u>
As Jessie added 16 gm. of Substance A to 4 gm. of Substance B Obtained certain amount of Substance C which can be calculated as follows:
amount of Substance C = Substance A + Substance B = 16 + 4 = 20 gm
Therefore, 20 gram of Substance C was obtained. Here, fourth statement is correct which says the mass of Substance C ifs five times the mass of Substance B to justify this, see the below:

Answer:
- Political Realism Theory
Explanation:
'Political Realism Theory' is described as the theory that aims to elucidate, model, and advise political actions. It is held primarily on the idea that 'individuals, as well as, states act as per the iron logic of self-interest' as the state holders pursue power for their own interests and the individuals for their own. Power plays a significant role in determining the political action at both the domestic, as well as, international arena as it preaches the principle of 'might is right' and thus, both the individuals and states assert their power for satisfying their self-interests.