An isolation precaution sign on a resident's door is missing PPE icons. The CNA should:

Explanation

Isolation signage must clearly indicate type and required PPE. Missing or incorrect signage is a system failure requiring immediate correction—verify with the nurse, restock signage and PPE, and document. Entering without proper PPE (a, c) exposes the CNA and other residents; asking the resident (d) is unreliable and breaches privacy norms. CDPH licensure standards require accurate visible signage at the entry.