"Management is the development of men and not the direction of things." This statement is of

Correct Answer: (A) Lawrence A. Appley

Explanation of the correct option:
The statement, “Management is the development of men and not the direction of things,” was given by Lawrence A. Appley, who was a former president of the American Management Association. This statement highlights the human-centred approach of management. It means that the main role of management is to develop the abilities, skills and potential of employees rather than merely controlling physical resources or things. The statement emphasises that effective management focuses on people development and human relations in the organisation. Therefore, the correct answer is (A) Lawrence A. Appley.

Explanation of incorrect options:

(B) R. C. Davis:
This option is incorrect because R. C. Davis did not give this statement related to management.

(C) Keith and Gubelline:
This option is incorrect because Keith and Gubelline are not associated with this quotation.

(D) George R. Terry:
This option is incorrect because George R. Terry is known for other contributions to management, not for this statement.

Conclusion:
The statement emphasizes that management mainly focuses on developing people and their abilities rather than only directing physical resources. This statement was given by Lawrence A. Appley. Hence, the correct answer is (A) Lawrence A. Appley.