A client is defined as which of the following?

The definition of a client primarily refers to someone who engages the services of a professional. This can encompass a wide array of settings, such as individual consumers seeking services from healthcare professionals, lawyers, financial advisors, or consultants, as well as organizations that require expertise or specialized services. The key aspect is that a client actively seeks and uses the professional services provided to them, establishing a relationship where services are rendered in exchange for payment or other forms of compensation.

In contrast, the other options represent different roles that do not align with the traditional definition of a client. For instance, a government agency providing grants typically acts as a funding body rather than seeking services. An investor financing a project is entering into a financial arrangement rather than using professional services. Lastly, a business partner in a joint venture refers to a collaborative entity rather than an individual or organization seeking specific professional services. This distinction clarifies why the term "client" is accurately embodied by someone using professional services.