1. G-d is the creator of the world.
2. G-d is the sustainer of the world.
3. G-d is the giver of the Torah.

Incorrect. While it is true that Judaism believes in G-d as the Creator, this in itself is insufficient, as it does not imply a continued involvement by G-d in the world.

1. G-d is the creator of the world.
2. G-d is the sustainer of the world.
3. G-d is the giver of the Torah.

Incorrect. G-d as the sustainer of the world is a very central concept in Judaism, but it does not imply that G-d has given direction to humanity or that He has a personal connection to the individual.

1. G-d is the creator of the world.
2. G-d is the sustainer of the world.
3. G-d is the giver of the Torah.

The Giving of the Torah is the most central notion in Judaism since:

1. It teaches that we have a personal relationship with G-d.
2. It teaches that the world has a purpose.
3. It teaches us the "art of living", i.e. moral behaviour, the most difficult of all arts.