Choice "A" is correct. Government Auditing Standards require that the auditor issue a written report on internal control in all audits. As part of this reporting requirement, the auditor must describe the scope of the auditor's work in obtaining an understanding of internal control and his or her assessment of control risk.
Choice "c" is incorrect. In the report, the auditor would identify deficiencies, significant deficiencies, and material weaknesses in internal control over compliance (not performance problems) found in the examination of the entity's internal control.
Choice "d" is incorrect. A report on fieldwork and procedures that substantiated the auditor's specific findings and conclusions would not be prepared as part of a GAGAS audit.
Choice "b" is incorrect. The objective of the audit of the financial statements is to provide an opinion on the financial statements, not on the entity's attainment of goals and objectives.