Answer:
The good answers here are:
A. They are more reflective (higher albedo) than most of the terrestrial planets.
C. They are larger than the terrestrial planets.
Explanation:
Light colored clouds found there have a better, reflective albedo. And both planets are so much bigger than Earth, they´re the biggest planets of our solar system. These are some factors of their brightness in our sky.
Answer:
Their gravity helps make life possible.
Explanation:
The Jovian planets are also known as gas giants and have had more of an impact on Earth than most Earthlings probably realise. During the formation of the solar system, these planets captured large planetesimals as moons and allowed the inner solar system to form less violently.
The gravitational pull of these massive planets also drew comets laden with ice from the outer reaches of the solar system towards the dry rocky worlds in the center. It was largely due to this slingshot process that Earth received its oceans.
Finally, the Jovian planets protect the inner planets today by deflecting asteroids and comets that might otherwise penetrate into the inner solar system and collide with Earth.