Which sentence below punctuates titles correctly?


Five years after landing on Mars, the Curiosity rover still roams the planet, looking for life and occasionally singing “Happy Birthday” to itself.


Five years after landing on Mars, the Curiosity rover still roams the planet, looking for life and occasionally singing “Happy Birthday” to itself.


Five years after landing on Mars, the “Curiosity” rover still roams the planet, looking for life and occasionally singing Happy Birthday to itself.


Five years after landing on Mars, the Curiosity rover still roams the planet, looking for life and occasionally singing Happy Birthday to itself.

1 answer

Five years after landing on Mars, the "Curiosity" rover still roams the planet, looking for life and occasionally singing "Happy Birthday" to itself.