Final answer:
Rachel is a shareholder of GM Cube Inc.
Step-by-step explanation:
The person who owns a large portion of a company's stocks without being employed by the company is called a shareholder. A shareholder is someone who owns shares of a company's stock, representing ownership in the company. They have a financial interest in the success of the company and may benefit from any dividends the company pays. For example, Rachel owns a large portion of GM Cube Inc. stocks, which means she is a shareholder of the company.