Final answer:
The correct answer to complete the conversation is 'hace frío'.
Step-by-step explanation:
The correct answer to complete the conversation is hace frío.
Antonio asks Marta about the usual weather during winter, and Marta responds that it is usually cold by saying 'hace frío'. This phrase means 'it is cold' in English.
Other options like 'hace calor' (it is hot), 'lloviendo' (raining), and 'está caliente' (it is hot) would not accurately complete the conversation in the context of discussing the climate during winter.
Learn more about Spanish Weather