Final answer:
The weight capacity of a portable CO2 extinguisher can be 2, 5, 10, or 20 lbs, depending on the model.
Step-by-step explanation:
The capacity (by weight) of a portable CO2 extinguisher can vary based on the model and manufacturer. Common sizes include 2 lbs, 5 lbs, 10 lbs, and 20 lbs. The correct answer to the question will depend on the specific choices provided in a test or textbook, which are not part of the information given here. Therefore, without specific context, each answer could potentially be correct.
A portable CO2 extinguisher typically has a weight capacity of either 5 lbs or 10 lbs. Therefore, the correct answer to the question is either option B or option C.