Step 1: Understanding the Question:
The question asks us to identify which of the given options is NOT a characteristic of a valid custom.
Step 2: Key Concepts and Approach:
Custom is a major historical source of law. For a custom to be legally binding, it must satisfy several essential legal requirements.
We must evaluate each option against these established legal tests.
Step 3: Detailed Explanation:
• Antiquity: A valid custom must be ancient, meaning it has been practiced since time immemorial (antiquity). Thus, Option A is a valid characteristic.
• Reasonableness: A custom must conform to reason and common sense. If a custom is absurd or harmful, courts will not recognize it. Thus, Option B is a valid characteristic.
• Consistency: A custom must be consistent with other established customs and existing statutes. Thus, Option C is a valid characteristic.
• Conformity with Morality: A valid custom must NOT be immoral or opposed to public policy. If a custom is opposed to morality, it is legally invalid. Therefore, "opposed to morality" is NOT a characteristic of a *valid* custom.
Step 4: Final Answer:
Since a valid custom must conform to morality, being "opposed to morality" makes it invalid. Therefore, Option D is the correct answer.