Final answer:
Gina Lin should use a formal presentation style and language when delivering a presentation to a group of investors.
Step-by-step explanation:
When delivering a presentation to a group of investors, Gina Lin should use a formal presentation style and language. Option C is the correct answer. The use of formal language and dressing formally will help establish professionalism and credibility in front of the investors. It is important for Gina to convey her message clearly and concisely, providing relevant details without overwhelming the audience with excessive information. Additionally, she should be mindful of asking appropriate and relevant questions to engage the investors effectively.