Kay is researching the health benefits of avocados. She finds an article on the website

tracyshealthproducts.com. Which of the following can assure Kay that the content is credible?

a$.$ The article's author has been a nutritionist for the last three years.

b$.$ The author has over $8,000$ connections on LinkedIn.

C$.$ The site sells products made from avocados.

d$.$ The firm that runs the site is located four blocks from her home.