Answer:
The correct answer is a. whistle-blower.
Step-by-step explanation:
A complainant is any person who raises a concern about an alleged crime or crime that is present in an organization, a company, or any group of people. In most cases, a complainant is a person who is somehow a part of the body that is being accused or disclosed. The alleged conduct that was brought to light can be classified in several ways, as a rule a violation of a specific law, rule, regulation, or a direct threat to the greater public interest (such as health / safety violations, fraud , or corruption) is the main reason that an individual take part in reporting irregularities.