Answer and Explanation:
If a dangerous substance is spilled and produces smoke and a suffocating smell, the ideal thing to do is to cover your nose, mouth and eyes quickly, with the appropriate safety material. Then all doors and windows must be opened and all laboratory workers and volunteers must leave the facility immediately.
Doors and windows must be opened so that the product can be released from the site, allowing workers to return to laboratory activities after the product is dispersed.
In cases like this it is necessary that all security products are ready to be used, in an easily accessible place and in perfect condition.
The correct answer is "adverb". This is because "within the old trunk" refers to the place where it was found, not a description of the trinket itself.
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