Final answer:
The correct MLA in-text citation for a quotation is to include the author's last name and the page number, making the proper citation: “Most teenagers consume too much sodium due to the prevalence of sodium in pre-packaged foods available in schools” (Hernandez 65).
Step-by-step explanation:
When citing a quotation in the body of a paper using MLA style, the author's last name and the page number from where the quote is taken should be included in the parenthetical citation. Considering the example given, the correct way to cite the quotation would be:
“Most teenagers consume too much sodium due to the prevalence of sodium in pre-packaged foods available in schools” (Hernandez 65).
This format allows readers to find the source of the information in the Works Cited page at the end of the document, ensuring that the text maintains a high standard of academic integrity and facilitates further research by anyone interested in examining the source materials that were used. It's important to remember that making healthy choices when it comes to selecting sources and properly citing them are necessary steps in the research process.