If it's looking for punctuation, the answer is a comma.
Implied (or implicit) textual evidence is suggested but not directly stated. When a reader comes across implied textual evidence, they have to:
put together details in the text to draw a conclusion and make educated guesses.
Reading between the lines is very vague, but you do have to infer (or draw a conclusion) with this technique.
Finding direct statements in the text that leave no room for doubt is explicit evidence (directly stated). This is the only one I would not mark.
The answer is synthetic because synthetic means a substance made by chemical synthesis to imitate a natural product.
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>
