The mass of a paper clip is approximately

1. 1 x 10^.6 kg
2. 1 x 10^3 kg
3. 1 x 10^-3 kg
4. 1 x 10^6 kg

I figured out the answer, its number 3.

Yes; the others are much too high

The mass of a paper clip is approximately 1 x 10^-3 kg.

To determine the mass of a paper clip, you need to consider the unit of measurement used. The standard unit for mass is the kilogram (kg).

Given the options provided:

1. 1 x 10^6 kg is equivalent to 1,000,000 kg. This is an extremely large mass and highly unlikely for a paper clip.
2. 1 x 10^3 kg is equivalent to 1,000 kg. Again, this is a very large mass and not representative of the weight of a paper clip.
3. 1 x 10^-3 kg is equivalent to 0.001 kg. This is a much smaller mass, but still quite large for a typical paper clip, which would most likely have a mass measured in grams or milligrams.
4. 1 x 10^6 kg is equivalent to 0.000001 kg. This is a minuscule mass and much closer to the expected mass of a paper clip.

Therefore, option 3, 1 x 10^-3 kg, is the closest approximation to the mass of a paper clip.