Final answer:
When unsure about a PA/AV item, it's best to ask a teacher or classmate for help to clarify the material and show your interest in the subject.
Step-by-step explanation:
If you're unsure about a PA/AV item, it is advisable to ask for help from a teacher or classmate. Rather than guessing the answer, skipping the question, or leaving it blank, seeking assistance can provide clarification and enhance your understanding of the material. Professors and teaching assistants generally appreciate when students show interest in the subject by asking for help with concepts they find challenging. It is a positive academic approach to seek support when you encounter difficulties, as it fosters collaborative learning and reduces errors in your work.