After a school district's annual revealed potential safety vulnerabilities associated with dark and isolated parking lots around campus, school administrators decided to invest $20,000 to install "panic button" emergency stations and additional lighting in these areas.
a. security auditb. osha citationc. employee assistance programd. ergonomic check-up

a. security audit

Explanation:

Based on the information provided within the question it can be said that the annual event being mentioned is an annual security audit. This is a systematic evaluation of a company/school's full security including building safety as well as information cyber security. Therefore since they found lack of safety features within the isolated parking lot they decided to invest this money for some to be added.

answer; charters;

answer; monopolistic competition;