Answer:
Entry C: Stenger, Wallace, et al. Modern Composition. Holt, Rinehart and Winston, 1964
Step-by-step explanation:
The task here is to select the correct citation.
When a work is written by multiple authors, only the name of the first author should be listed and then followed by et al. In et al., only al should be followed by a period.
The name of the author (and et al.) should be followed by the title of the work, the publisher, and the year of publication.