Which level of suit is used where splashes may occur, but where respiratory hazards are moderate?

The correct choice is Level B as it is designed for situations where there is a need for high protection against hazardous materials, particularly in regard to respiratory hazards. Level B suits provide full body coverage and are equipped with breathing apparatus, allowing responders to work effectively in environments where splashes of chemicals may occur. This is critical in scenarios where airborne exposure risk requires respiratory protection, making it suitable for moderate respiratory hazards.

Level B suits are used when the type and concentration of the hazardous substances are known and the atmospheric hazards are moderate. In addition to their respiratory protection, these suits are typically made from materials that provide good liquid spill protection, thus ensuring safety from chemical splashes while allowing the wearer access to breathable air.

On the other hand, Level A suits offer the highest level of protection both chemically and against respiratory hazards, requiring a self-contained breathing apparatus (SCBA), but are unnecessary in cases where the respiratory risk is moderate. Level C suits are used when the concentration of airborne substances is known to be less hazardous, and thus they require less stringent protective measures. Level D suits provide minimal protection and are only suitable for situations where there are no significant health risks.