Final answer:
The most reliable place to find the address and phone number for corporate offices is on the website of the company, typically on the contact page or website footer.
Step-by-step explanation:
The address and phone number for a company's corporate offices can typically be found on the website of the business. This information may be listed on the contact page or at the bottom of the homepage. While other options like the restaurant menu, local newspaper, and signage at the front entrance of the restaurant might occasionally contain this information, a company's official website is the most reliable source. To find corporate contact information, look for links titled 'Contact Us', 'Corporate Information', or similar verbiage on the website.