The correct answer is:
A. David ha abierto la lata.
"David ha abierto la lata", is the best Spanish equivalent to, "David has opened the can".

La respuesta es A. Entrevistado. ¡Siempre recuerda que el primero es lo primero! ¡Espero que esto ayude! ~ Otoño :)
If this is in a question form there's a lot of ways to say this or meanings.
As
Are you you patient?
Eres paciente?
Are you tranquil?
estas tranquilo?
Are you tolerant?
Eres tolerante?
Are you insisten?
Eres insistente?
Or affirmative sentences.
As
You are patient.
Tu Eres paciente.
You are tranquil.
Tu Eres tranquilo.
You are tolerant.
Tu Eres tolerante.
You are insistent.
Tu Eres insistente.
PLACE THE MISSING COMMA.
1. Don't look guys, the eclipse.
2. María Cecilia, Elena and you are four beautiful girls.
3. The mother knitted, the father read and the child played.
4. She has a family but tries to leave her.
5. Julieta my very funny granddaughter.
6. We will rest in the field; you in the city.
7. We export tea oil and other products. 8. It did what it wanted to say, it was undemocratic.
9. She insisted several times but she did not convince.
10. There were, however, other solutions.
11. We will invite Carlos Eloisa Juan and Ana.
12. She makes the beds, cleans the floor, she takes care of the kitchen and goes to pick up the children from school.
13. The horse neighs, the donkey brays, the frog croaks and the dog barks.
14. Peter I beg you to open the door.
15. Wait for me Carmen there.
16. Is he very sick doctor?
17. When you arrive let me know.
18. Finally I will add that they have me at his disposal.
19. At the end of the day I think that is going to hurt us.
20. That doesn't really matter to me at all.
21. He lives pending his hair, he straightens it, curls it, brushes it, puts it on his face, picks it up in braids ...
22. We got on the bicycles, we started to roll, we climbed up the hill; but soon we stopped in surrender.
23. The plane took off, it rose, it entered a cloud and we did not see it again.
24. My brother, who was very tired, went to bed right away.
25. I will not go, I assure you, even if they invite me. 26. It is true1 he said that I saw it.
27. Driven by the wind the boat crashed into the rocks
Just put the comas in the Spanish version
This is the wrong subject. Put it in English.