Which of these sentences is written in the perfect tense?

1. I will research my topic when I get home.
2. I have researched my topic really well.
3. I researched my topic.
4. I would research my topic if I had more time.

Respuesta :

3 is the correct answer :)
3 or 1. i say 3 or 1 because they both make sense and they both have proper grammar.