The correct answer is B) labeled empty and recharged as soon as possible. The reasoning is that a partially discharged squeeze-grip type carbon dioxide portable fire extinguisher should be recharged, regardless of the amount of weight loss. This is because even a small amount of discharge can impact the extinguisher's effectiveness and reliability in an emergency situation. The regulations require that partially discharged fire extinguishers be taken out of service and recharged as soon as possible, rather than being left in place. The other options are incorrect because A) and D) suggest that the extinguisher can remain in place if the weight loss is within a certain percentage, which does not align with the proper procedures for a partially discharged extinguisher. Option C) is also incorrect, as the extinguisher should not remain in place regardless of the weight loss.