The correct answer is: A. to facilitate the protection of its assets.
Winding-up is the process of dissolving a company and distributing its assets to its creditors and shareholders. The object of winding-up is to protect the assets of the company and to ensure that they are distributed fairly among the creditors and shareholders.
Option B is incorrect because the object of winding-up is not to convert the company into a private company. The object of winding-up is to dissolve the company and distribute its assets.
Option C is incorrect because the object of winding-up is not to convert the company into a public company. The object of winding-up is to dissolve the company and distribute its assets.
Option D is incorrect because the object of winding-up is not to change the Memorandum of Association and Articles of Association. The object of winding-up is to dissolve the company and distribute its assets.