In priority disputes over property rights, earlier common law rights will not prevail over later rights in which circumstances?a.where the later right is held over more substantial property;b.where the later right was acquired without notice of the earlier right;c.where the later right was acquired due to the gross negligence of the earlier holder.d.where the later right was acquired by a purchaser for value;

To answer the question step by step:

1. Identify the context: The question pertains to priority disputes over property rights and under what circumstances later rights can prevail over earlier common law rights.

2. Analyze each option:

   • Option a: "where the later right is held over more substantial property" - This option suggests that the size or value of the property might influence the priority, but common law typically does not prioritize based on the substantiality of the property alone.
   • Option b: "where the later right was acquired without notice of the earlier right" - This option refers to the concept of "bona fide purchaser without notice," which is a recognized principle in property law. If a later purchaser acquires the property without knowledge of the earlier right, they may have priority.
   • Option c: "where the later right was acquired due to the gross negligence of the earlier holder" - This option implies that the earlier holder's negligence could affect priority, but common law usually does not consider negligence alone as a factor for priority disputes.
   • Option d: "where the later right was acquired by a purchaser for value" - This option suggests that if the later right was acquired by someone who paid value for it, they might have priority. This is related to the principle of "purchaser for value without notice."

3. Determine the most applicable principle: The principle of "bona fide purchaser for value without notice" is a well-established doctrine in property law, which means that a later purchaser who buys the property for value and without notice of the earlier right can have priority over the earlier right.

4. Conclusion: Based on the analysis, the correct answer is:

   • b. where the later right was acquired without notice of the earlier right.

To answer the question step by step:

1. Identify the context: The question pertains to priority disputes over property rights and under what circumstances later rights can prevail over earlier common law rights.

2. Analyze each option:

   • Option a: "where the later right is held over more substantial property"
     • This option suggests that the size or value of the property might influence the priority. However, property law typically does not prioritize based on the substantiality of the property alone.
   • Option b: "where the later right was acquired without notice of the earlier right"
     • This option refers to the concept of "bona fide purchaser without notice." In many legal systems, a later purchaser who acquires property without knowledge of an earlier claim may have priority.
   • Option c: "where the later right was acquired due to the gross negligence of the earlier holder"
     • This option implies that the earlier holder's negligence could affect priority. While negligence might impact certain legal outcomes, it is less commonly a direct factor in determining property right priority.
   • Option d: "where the later right was acquired by a purchaser for value"
     • This option suggests that a purchaser who provides value (consideration) for the property might have priority. This is a common principle in property law, where a bona fide purchaser for value can have priority over earlier claims.

3. Determine the most applicable option:

   • Option b and Option d are both strong contenders based on common legal principles. However, Option b specifically addresses the lack of notice, which is a critical factor in many legal systems for determining priority.

4. Conclusion:

   • The most appropriate answer is Option b: "where the later right was acquired without notice of the earlier right."

Therefore, the correct answer is: b. where the later right was acquired without notice of the earlier right.