Correct Answer: breach

Solution : The third option is the correct answer.

Violation denotes the act of infringing on established norms or legal boundaries. Similarly, breach signifies the breaking or violation of a rule, contract, or duty.

The meanings of other options are as follows:

• Adherence is the act of sticking to or following a particular set of rules or standards.
• Legal pertains to the law or within the boundaries of the law.
• Obedience refers to compliance with or submission to authority or rules.

Therefore, the correct answer is breach.