What is the metric equivalent of 2.2 pounds?

To understand why the metric equivalent of 2.2 pounds is 1 kg, it's important to consider the relationship between pounds and kilograms within the metric system. The conversion factor for pounds to kilograms is that 1 pound is approximately equal to 0.453592 kilograms.

When you convert 2.2 pounds to kilograms, you multiply 2.2 by the conversion factor (0.453592 kg/lb):

2.2 pounds × 0.453592 kg/pound ≈ 1 kg.

This calculation shows that 2.2 pounds is very closely equal to 1 kilogram, making this the correct choice.

The other options do not align with this conversion factor. For instance, 0.9 kg would suggest a greater weight in pounds than actually represented by 2.2 pounds, while both 2 kg and 3 kg significantly overestimate the weight, as they would correspond to approximately 4.4 pounds and 6.6 pounds, respectively. Thus, option A correctly reflects the standard metric conversion for 2.2 pounds.