Detailed Solution:
The correct answer is “Rock Edict – XII”.
The Rock Edict of Ashoka that speaks of religious synthesis is Rock Edict XII.
This edict emphasizes the importance of respect for all religions and advocates for harmony among different faiths. Ashoka encourages his subjects to adopt a tolerant attitude towards one another, fostering an environment of mutual respect and understanding.
In Rock Edict XII, Ashoka explicitly mentions that people should treat others' beliefs with reverence, which contributes to the idea of religious synthesis during his reign. This approach was particularly significant in the context of ancient India, where diverse religious traditions coexisted.