Final answer:
Book binding and dust jacket are two aspects of book design for which durability is a prime consideration.
Step-by-step explanation:
Two aspects of book design for which durability is a prime consideration are book binding and dust jacket. The book binding, which holds the pages together, should be sturdy and well-made to withstand frequent use. The dust jacket, which protects the cover, should be made from a durable material to prevent damage.