Answer:
Practices by a certain group of people is known as : A. Customs
For example, it is a custom in Japan to bow down when you introduced yourself to someone at the first time.
Custom tend to be only applied to a specific group of people. If a member of that group of people failed to follow the custom, he/she tend to received social punishment such as social exclusion
D is the correct answer because it uses two commas to separate "Raja" from the goalkeeper. But also separates "goalkeeper" from the rest of the sentence.
The best answer for this question would actually be:
B. by showing the human side of international politics
<span>In his speech, the Prime Minister had shown in his speech what has happened in the result of the war, and what they can do in order to change the political system to be able to have order.</span>
The answer is A because you can use context clues