Which of the following statement(s) is/are true?

Answer: Option A

The aim of organising is to bring together individuals, resources, and activities to work in harmony towards achieving a common goal. It ensures clarity in roles, responsibilities, and relationships, which helps in achieving organizational objectives effectively.

Unity of command is not a principle of planning but a principle of management that states that each employee should receive instructions from only one superior to avoid confusion.

The basis of staffing is not a principle of planning but rather a function of management that focuses on hiring, training, and maintaining the workforce.

Hence, Option A is the correct statement, while the other options are incorrect.