MLA guidelines for citing multiple authors in-text (the same source) use the first author's name and 'et Al' for the others in the case of....

• A. 2 authors
• B. 3 authors
• C. 4 or more authors
• D. 1 author

Answer: (C)

In MLA in-text citations, the form changes based on how many authors there are. When a source has three or more authors, you use the first author's last name followed by et al. to indicate the remaining authors, and you include the page number only if you’re quoting or referring to a specific part. For example, you would write (Garcia et al.) or incorporate it into the sentence as Garcia et al. argue... This keeps citations concise while still guiding readers to the source. For two authors, you would list both surnames (Garcia and Patel); for one author, just the single surname (Garcia). And remember, the same et al. pattern applies for four or more authors as well—the essential rule is three or more authors trigger et al.