If a planet becomes too hot then that planet cannot sustain life, and if a planet is too close to a star, then it will be too hot for liquid water to exist. Given these facts, if a planet cannot sustain life, then the planet may be too close to what among the following options:
- a ship
 - Sun
 - sunlight
 - earth
 - a crater
 - an object
 - a moon
 - a star


 

        a star 