Answer: La planta salió.
Explanation: The story of "The Farmer and the Turnip?" talks us about a farmer that is trying to take out the ground a turnip.
in the story, he grabs the turnip and tries to pull it of the ground, and so on.
so the options given in this question are:
1) El campesino plantó unas semillas. (The farmer planted some seeds)
2) El campesino agarró la planta.
(The farmer grabbed the plant)
3) La hija agarró a la esposa (The daughter grabbed the wife)
4) La planta salió. (The plant came out)
The final event in the story, is tath the turnip finally comes out the ground and it is enormous, so the right answer is option 4.