The head librarian issued a directive that "absolutely no food or drink are allowed in the library." she issued this directive because several computers and keyboards in the computer labs, as well as several study cubes, were recently damaged by spilled drinks and food. this is a(n) issued by the librarian.

rule

Explanation:

A rule is regulations that are understood by people. Laws are rules if broken can lead to punishment by the government. Whereas a rule is supposed to be followed by a person and if rules are broken the government does not impose punishment.

The person who has imposed the rule is responsible for what action is to be taken if a person breaks the rule.

Hence, here the librarian has issued a rule.

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