Answer:
2. An available alternative design.
Explanation:
Note that in law held liable for the quality of products they sell to their customers. The cost or the legal penalty a manufacturer or trader incurs for producing or selling a faulty product is what is termed product liability.
Since it was the consumer Erna that filed a product liability suit against ClearCall, an available alternative design may be considered by the court so as to replace the faulty phone bought by Erna before holding ClearCall liable.