Final answer:
The correct answer is 'el verano' which means 'the summer' in English.
Step-by-step explanation:
The correct answer to fill in the blank is el verano. This translates to 'the summer' in English. The phrase 'hace mucho calor' means 'it's very hot', so the sentence translates to 'It's very hot in the summer'.
Learn more about Spanish weather seasons