Your question might be incomplete. For example: Indirect form, narration/etc.
Answer:
Jagannath said that No I am not your enemy.
Explanation:
As you can see "Jagannath said." and " No I am not your enemy" are two sentence we can change it to one sentence by adding "that" to the sentence.
<u><em>~Lenvy~</em></u>
The answer to this question is D. because the narrator only knows the thoughts and feelings of one character and he/she is describing some of the other characters by using the pronoun they.
I guess it would be easier for us to define the disadvanatges if you tell us about the technologies you want to mention. For example, it is hard to think of technology and nature together but even advances like Artificial Intelligence (AI) that could not be further removed from the natural world are helping conservation efforts. Well, at least I tried to answer your question. More help you can get if you check the tips at Prime Writings site. Good luck with it!