Final answer:
The word 'el metro' best completes the sentence 'Me gusta ___ porque me ahorro dinero' meaning 'I like ___ because I save money' in Spanish.
Step-by-step explanation:
The correct word to complete the sentence Me gusta ___ porque me ahorro dinero is el metro.
Me gusta el metro porque me ahorro dinero means "I like the subway because I save money."
In this sentence, el metro is the best choice because it fits grammatically and contextually. It expresses the speaker's preference for using the subway to save money.
Learn more about Completing a sentence in Spanish