Answer:
creo que es la b pero no estoy seguro
Si Antonio estuviera en la fiesta, el hablaria con Juan.
This sentence means - If Antonio had gone to the party, he would have talked to Juan.
It is a hypothetical sentence, meaning that it didn't happen but states what could have happened had he decided to go to the party.
Number 5 is “A mi me gusta comer fruta.” Or “Me gusta comer fruta.”