Correct Answer: Facsimile

Solution : The correct choice is the fourth option.

A facsimile is a reproduction or exact copy of something, often referring to a copy of handwriting, printing, or any other document. It is used to convey the idea that the copy is very faithful and precise, maintaining the details and characteristics of the original.

The meanings of the other options are as follows:

• Platitude means a dull or commonplace remark.
• Maiden refers to something in its earliest or initial stage, or a person who has never been married.
• Potable means suitable for drinking; safe to drink.

Therefore, the correct answer is facsimile.