Correct Answer: Regularity

Solution : The third option is the correct choice.

Anomaly refers to something that is irregular or deviates from the norm. In contrast, regularity describes the quality of being regular or conforming to a standard.

The meanings of the other options are as follows:

• Omen is a phenomenon believed to foretell the future.
• Tangible means perceptible by touch; capable of being touched or felt.
• Tangent refers to a digression or a departure from the main topic in a conversation or discussion.

Therefore, the right answer is regularity.