Final answer:
The appropriate verb in the conditional tense to complete the sentence is 'saldría' which means 'I would go out'.
Step-by-step explanation:
The correct answer is option OD. The verb 'saldría' is in the conditional tense and means 'I would go out' or 'I would hang out' in English. In the given sentence, it expresses a hypothetical situation: 'If I were in Spain, I would go out a lot with my friends.' The conditional tense is used to talk about actions that would happen under certain conditions or hypothetical situations.
Learn more about Conditional Tense in Spanish