The correct answer is B) check the temperature and pressure indicators in the hold space. The reasoning for this is that when an alarm indicates liquid in the cargo hold, the first priority is to assess the situation and determine the root cause before taking any potentially dangerous actions. Checking the temperature and pressure indicators will provide crucial information about the status of the cargo hold, which can help determine the appropriate next steps. This is in line with standard safety procedures for handling LNG cargo. The other options are incorrect because they involve more risky actions, such as immediately trying to educt the LNG, purge the hold, or send someone into the space, without first properly assessing the situation. These actions could potentially make the situation worse or endanger personnel if the root cause is not fully understood.