Final answer:
Participants indeed need a copy of the participant's manual or Ready Reference Card to participate in class, as these materials are necessary for properly conducting tests and referencing important information during training.
Step-by-step explanation:
To answer the student's question, participants must have a copy of the participant's manual or Ready Reference Card (adult or pediatric) to participate in class. This statement is True. Having the necessary materials, such as a participant's manual or Ready Reference Card, is essential when attending a class that involves practical skills and knowledge application. For example, in a healthcare or first aid course, participants would need these materials to reference procedures, protocols, and critical information during their training.
In the specific context provided, where a test involving a test card, patient serum sample, and reagent is to be performed, it is equally important that participants have access to all required materials and guidelines to ensure the test is performed correctly. These materials likely include instructions for handling the reagent, which in this case is a suspension of horse erythrocytes, and correctly interpreting the results on the test card.