Evaluate the effectiveness of the management system: This objective involves verifying that the quality management system meets the requirements of a specific standard, such as ISO 9001:2015, and that it achieves the intended results and outcomes. The audit team will collect and analyse audit evidence to determine the degree of conformity and performance of the quality management system23.

•Evaluate the capability of the management system to establish and achieve objectives: This objective involves verifying that the quality management system supports the strategic direction and policies of the organization, and that it addresses the needs and expectations of the interested parties. The audit team will assess the suitability, adequacy, and alignment of the quality management system objectives, and the effectiveness of the planning and implementation processes to achieve them23.

The other options are not the most relevant objectives of a third-party audit, according to the web search results from my internal tool. They may be related to other aspects or types of audits, but they are not the focus of a third-party audit.

Therefore, the correct answer is B and D.