Well I'm not sure it's been confirmed properly it i would say earth because most of the others are either too cold or hot and I'm not sure life would be safe In these conditions. Apparently a new planet may have been discovered with water but until then earth seems safe enough to me. Hope this helps :-)
Earth
the safest place during an earthquake is probably in the highest place you can be
the safest position for a switch is on the live wire and not on the neutral wire
The eastern Great Lakes are probably the safest.
You might last a few seconds on Mars before the lack of oxygen kicks in. The surface of Mercury is a vacuum, while the pressure on Venus is about 93 times that of earth (so you'll be instantly crushed). The outer gas planets are very cold and have no proper solid surface.
Probably because it is the closest planet to Earth
the northermost regions of the planet
Earth
In a space ship ready to take off.
what do you mean??? safest to retrieve? safest to destroy? safest hiding place? safest to be near for a long period of time? safest what???
safest walking non safe running
There is no safest month.
8 is the safest age of life 8 is the safest age of life
The safest way to trade commodities is through a broker. He/she will have a better idea of what is safest.
Statistically, air travel is the safest.
The middle back seat is the safest.
The comparative is safe, and the superlative is safest.