Final answer:
The failure to file an affidavit stating a trademark is in use can lead to its invalidation on the grounds of abandonment.
Therefore, the correct answer is: option A) Abandonment.
Step-by-step explanation:
Abandonment is one of the legal grounds upon which a trademark's registration can be cancelled, alongside other reasons like genericide, trademark dilution, and trade dress infringement, which have different legal implications.
The failure of a trademark owner to file an affidavit stating it is in use is referred to as abandonment, which is one reason a trademark can be invalidated.
When a trademark is not actively used by its owner and there's a failure to file an affidavit or the required documents to prove its ongoing use, it suggests that the owner does not intend to resume use of the mark, leading to its potential abandonment.