In this question you are being asked to identify whether the company publicly discloses the percentage of facilities beyond tier 1 (e.g. tier 2/3/4 by which we mean processing facilities, textile mills, laundries and dye houses, suppliers of raw materials, farms) which are audited. Start by looking for a description of if and how the company conducts supply chain audits or other forms of supplier assessment.

Where to look for this information:
- Corporate Social Responsibility report
- Company documents
- Company websites
- In Modern Slavery Statement or California Transparency Act disclosure
- Company code of conduct
- Parent company documents (only if the parent company is linked to from the brands website)
- Parent company policies (only if the parent company is linked to from the brands website)
- Parent company websites (only if the parent company is linked to from the brands website)
- Parent company code of conduct (only if the parent company is linked to from the brands website)

Good keywords for your searches include:
- Audit
- Factory visit/Assessment
- Supplier Compliance
- Social Compliance
- Assessment
- Monitoring
- Measurement or Performance Standards
- Off-site interview

Things to keep in mind:
- Good place to look for section 4 questions might be a company's Modern Slavery Statement or if they publish their Know The Chain response as well as their annual report.
- Facility-level assessment processes are typically audits