Directions: In the following question, four statements are provided. These statements form a coherent paragraph when properly arranged. Select the alternative representing the proper and logical sequencing of these statements.

A. In a slightly different form, it might be said to come to birth along with reason, at the moment when the latter begins to control our instincts. B. At the risk of repetition, let us state again that the primary incentive for every being to act is the satisfaction of its own instincts.
C. In the higher forms of life, ethics are born at the moment when living things are faced with a choice between two alternatives.
D. In the case of man, this is more or less controlled by the prospect of any inconvenience, displeasure or pain that may arise their - form.