I assume you mean the three tenses, but let me know if you need more.
Past Tense: "Birds flew in the sky."
Future Tense: "Birds will fly in the sky."
The sentence is already in the present tense.
The answer is 3 because it starts with “on” which is a preposition
Answer:
its examine what people are willing to do to endure and to protect lives.
introduce the reasons for the popularity of violence in the media and in literature.
C or d both are good but I am leaning towards c